GTO Garage DIY - Mark Quitter Racing

Torque Specs

Mark Quitter — Wed, 29 Oct 2025 18:10:45 +0000

Welcome to my 2004-2006 Pontiac GTO Torque Specifications guide. It is extremely important when working on your vehicle to tighten any nuts and bolts to the proper Torque specification. Over tightening can put stress on the bolts and cause them to break or snap. Under tightening can cause nuts and bolts to come loose, causing serious problems to parts on the vehicle to prematurely break or fail, not to mention the dangers of driving a vehicle with loose bolts.

I highly recommend purchasing a Torque wrench for all your do-it-yourself automotive projects. You can purchase these at any Harbor Freight tool store or Home Depot hardware store. They come in 1/4″, 3/8″, and 1’2″ drive. You may need to purchase multiple torque wrenches depending on the torque settings you are trying to achieve.

Below you will find a list of common torque specs for the 2004-2006 Pontiac GTO. I will add more items as questions and requests arise. If you need a torque specification not listed, please send me a message and I will find the proper specification using the service manual.

2004-2006 Pontiac GTO: ENGINE COOLING

PART	ENGLISH	METRIC
Automatic Transmission Oil Cooler Line Fitting	18 lb ft	25 N.m
Coolant Reservoir Screws	89 lb in	10 N.m
Coolant Fan Motor Screws	44 lb in	5 N.m
Oil Pan Shield	22 lb ft	30 N.m
Thermostat Housing To Water Pump Bolts	10 lb ft	14 N.m
Water Pump Bolts – FIRST PASS	11 lb ft	15 N.m
*SECOND PASS/FINAL PASS	18 lb ft	25 N.m
Water Pump Inlet	10 lb ft	14 N.m

2004-2006 Pontiac GTO: DISC BRAKES

PART	ENGLISH	METRIC
Brake Caliper Bracket Bolt – Front (First Pass)	52 lb ft	70 N.m
*SECOND PASS/FINAL PASS	+90 degrees	+90 degrees
Brake Caliper Bracket Bolt – Rear	63 lb ft	85 N.m
Brake Caliper Guide Pin Bolt – Front and Rear	24 lb ft	32 N.m
Brake Hose To Caliper Fitting – Front (First Pass)	115 lb in	13 N.m
*SECOND PASS/FINAL PASS	+90 degrees	+90 degrees
Brake Hose To Caliper Fitting – Rear	26 lb ft	35 N.m
Brake Pipe To Brake Hose Flare Nut	12 lb ft	16 N.m
Brake Shield To Rear Lower Control Arm Lower Bolt	65 lb ft	88 N.m
Brake Shield To Rear Lower Control Arm Upper TORX Bolt	55 lb ft	75 N.m

2004-2006 Pontiac GTO: DRIVELINE

PART	ENGLISH	METRIC
Differential Drain Plug	20 lb ft	27 N.m
Differential Fill Plug	20 lb ft	27 N.m
Differential Rear Mount to Under Body Bolts (4) – FIRST PASS	26 lb ft	35 N.m
*SECOND PASS/FINAL PASS	+ 60 Degrees
Differential Rear Mount to Differential Cover Bolts (2)	70 lb ft	95 N.m
Differential Crossmember Mount Bolts (4) – FIRST PASS	66 lb ft	90 N.m
*SECOND PASS/FINAL PASS	+ 38 Degrees
Wheel Drive Shaft to Axle Stub Shaft – FIRST PASS	37 lb ft	50 N.m
*SECOND PASS/FINAL PASS	+ 67 Degrees
Outer Driveshaft (axle) To Hub – FIRST PASS	37 lb ft	50 N.m
*SECOND PASS/FINAL PASS	+ 68 Degrees
Inner Drive Shaft (axle) To Differential – FIRST PASS	37 lb ft	50 N.n
*SECOND PASS/FINAL PASS	+ 68 Degrees

2004-2006 Pontiac GTO: ELECTRICAL

PART	ENGLISH	METRIC
Battery Hold Down Retainer Bolt	13 lb ft	18 N.m
Battery Tray Bolt (3)	106 lb in	12 N.m
Engine Harness Cable Nut	10 lb ft	13 N.m
Generator Bolt	37 lb ft	50 N.m
Generator Bracket Bolt	37 lb ft	50 N.m
Generator Shaft Nut	55 lb ft	75 N.m
Ground Strap Bolt	24 lb ft	32 N.m
Ground Strap Nut	71 lb in	8 N.m
Instrument Panel (I/P) Wiring Harness Junction Block Nut	89 lb in	10 N.m
Negative Battery Cable Ground Nut	71 lb in	8 N.m
Negative Battery Cable Terminal Bolt	71 lb in	8 N.m
Negative Battery Cable to Battery Bolt	11 lb ft	15 N.m
Positive Battery Cable Bolt	11 lb in	15 N.m
Positive Battery Cable Nut at Fuse/Relay Center	71 lb in	8 N.m
Positive Battery Cable Nut at Solenoid	89 lb in	10 N.m
Positive Battery Cable to Starter Motor Stud Nut	11 lb in	15 N.m
S Terminal Nut	35 lb in	4 N.m
Starter Motor Bolt	37 lb ft	50 N.m

2004-2006 Pontiac GTO: ENGINE

PART	ENGLISH	METRIC
Accessory Drive Belt Tensioner Bolts (2)	37 lb ft	50 N.m
A/C Drive Belt Tensioner Bolt (1)	37 lb ft	50 N.m
A/C Drive Belt Idler Pulley (1)	37 lb ft	50 N.m
Drive Belt Idler Pulley (1)	37 lb ft	50 N.m
Ignition Coil Bolts to Bracket	89 lb in	10 N.m
Ignition Coil Bracket Studs	106 lb in	12 N.m
Oil Pan Drain Plug (1)	18 lb ft	25 N.m
Skid Plate (engine protection shield) Bolts (4)	22 lb ft	30 N.m
Spark Plugs	11 lb ft	15 N.m
Valve Rocker Arm Cover Bolts	106 lb in	12 N.m
Water Pump Bolts (6) – FIRST PASS	11 lb ft	15 N.m
*SECOND PASS/FINAL PASS	22 lb ft	30 N.m
Water Pump Inlet/Thermostat Housing (2)	10 lb ft	14 N.m

2004-2006 Pontiac GTO: EXHAUST

PART	ENGLISH	METRIC
Displacement Joint To Converter Pipe Bolts	30 lb ft	40 N.m
Displacement Joint To Dual Dual Pipe Flange Bolts	30 lb ft	40 N.m
Front Muffler Pipe To Rear Muffler Pipe Bolt	18 lb ft	25 N.m
Exhaust Catalytic Converter To Muffler Flange Bolt	30 lb ft	40 N.m
Exhaust Manifold Bolts – FIRST PASS	11 lb ft	15 N.m
*SECOND PASS/FINAL PASS	18 lb ft	25 N.m
Exhaust Manifold Heat Shield Bolt	80 lb In.	79 N.m

2004-2006 Pontiac GTO: FRONT SUSPENSION

PART	ENGLISH	METRIC
Control Arm Rod Insulator Bushing (Radius Rod) to Front Frame Nut (4)	17 lb ft	23 N.m
Control Arm Rod (Radius Rod) to Control Arm Bushing Nut (1)	109 lb ft	148 N.m
Control Arm Ball Joint Stud to Knuckle Nut (1)	44 lb ft	60 N.m
Control Arm Rod to Control Arm Nut	76 lb ft	103 N.m
Control Arm to Front Frame Nut	72 lb ft	98 N.m
Front Support Brace to Body Nuts (4) (strut tower bar)	22 lb ft	30 N.m
Front Stabilizer Bar Insulator Brackets to Frame Nut (4)	20 lb ft	27 N.m
Front Stabilizer Bar Link Lower Stud to to Stabilizer Shaft Nut (1)	37 lb ft	50 N.m
Front Stabilizer Bar Link Upper Stud to Strut Bracket Nut (1)	12 lb ft	16 N.m
Front Strut to Body Nut (1)	41 lb ft	55 N.m
Front Strut Rod Shaft to Strut Mount Nut (1)	58 lb ft	78 N.m
Front Strut to Knuckle Nut and Bolt (2) – FIRST PASS	63 lb ft	85 N.m
*SECOND PASS	74 lb ft	100 N.m
*FINAL PASS	+90 degrees
Hub to Knuckle Allen Bolt	80 lb ft	108 N.m
Outer Tie Rod End Ball Stud to Steering Knuckle Nut	50 lb ft	68 N.m

2004-2006 Pontiac GTO: REAR SUSPENSION

PART	ENGLISH	METRIC
Rear Shock Absorber Top Stud Nut to Body (1)	10 lb ft	14 N.m
Rear Shock Absorber Lower Bolts (1)	85 lb ft	115 N.m
Rear Stabilizer Bar Mounting Bracket Bolts (2)	16 lb ft	22 N.m

2004-2006 Pontiac GTO: FRAME

PART	ENGLISH	METRIC
Brace (rear cradle) to Underbody Bolts (1)	92 lb ft	125 N.m
Rear Cradle Suspension Support Insulator Bracket Bolts (3)	52 lb ft	70 N.m
Differential Carrier Mounting Bolts (4)	66 lb ft	90 N.m
Front Frame Bolts – Front	92 lb ft	125 N.m
Front Frame Bolts – Rear	92 lb ft	15 N.m

2004-2006 Pontiac GTO: POWER STEERING

PART	ENGLISH	METRIC
Power Steering Fluid Reservoir Bracket to Engine Bolts (2)	37 lb ft	50 N.m
Inner Tie Rod to Outer Tie Rod End Lock Nut	37 lb ft	50 N.m
Outer Tie Rod End Ball Stud to Steering Knuckle Nut	50 lb ft	68 N.m
Power Steering Cooler to Body Bolt	57.5 lb in	6.5 N.m
Power Steering Cooler to Cooler Bracket Bolt	57.5 lb in	6.5 N.m
Power Steering Gear Inlet Pipe to Engine Bracket Bolts	18 lb ft	25 N.m
Power Steering Gear Inlet Pipe to Frame Bolt	57.5 lb in	6.5 N.m
Power Steering Gear Inlet Pipe to Power Steering Gear Flare Nut	27 lb ft	36 N.m
Power Steering Gear Inlet Pipe to Power Steering Pump Flare Nut	22 lb ft	30 N.m
Power Steering Gear Outlet Pipe to Power Steering Gear Flare Nut	27 lb ft	36 N.m
Power Steering Gear Outlet Pipe Clip to Front Frame Bolts	57.5 lb in	6.5 N.m
Power Steering Pump to Cylinder Head Bolts	21 lb ft	28 N.m
Steering Coupling to Steering Gear Pinion Nut and Bolt	21 lb ft	28 N.m
Steering Gear Housing to Front Frame Nuts – FIRST PASS	44 lb ft	60 N.n
*SECOND PASS/FINAL PASS	+45 degrees

2004-2006 Pontiac GTO: WHEEL LUG NUTS

PART	ENGLISH	METRIC
Wheel Lug Nuts: Taken Directly From The Owners Manual. Tighten In A Star Pattern	100 lb ft	135.6 N.m

For more valuable information be sure to visit the “Do-It-Yourself” (DIY) category found here.

Note: I hope you found the information contained on this website useful. Many hours of time and research have gone into building this website. Please feel free to donate to Mark Quitter Racing. Donations will be used to pay for website services or for any other practical use per your request which can be filled out using the PayPal donation link. There is no minimum amount, and your support is greatly appreciated. Donate here.

The post Torque Specs first appeared on Mark Quitter Racing.

2004-2006 GTO Factory Radio Code

Mark Quitter — Fri, 24 Oct 2025 01:14:06 +0000

Need the code for your factory 2004-2006 Pontiac GTO Blaupunkt radio? Hopefully, I have the answer!

The factory radio/stereo requires a code to unlock all of the features and operate the radio. Many owners have had the factory radio cd player/changer break on them, causing cd discs to no longer play or even become permanently stuck inside the radio. Purchasing a used radio to replace the broken one is the easiest fix. There are many available online through websites such as eBay and CraigsList. These radios can easily be replaced using removal tools. Unfortunately for a used radio from another 5th Generation GTO to work in your vehicle, you will need the code to unlock the radio and use its features. Luckily there is a website to find and locate the code for the factory radio using the serial numbers.

Follow these steps to replace your factory 2004-2006 Pontiac GTO radio with a used radio from another vehicle:

Remove your factory radio using the removal tools. Tools can be purchased here: https://gtog8ta.com/04-06-gto/04-06-gto-radio-removal-key-tool/
DO NOT INSTALL THE NEW RADIO REPLACEMENT YET! On the new radio, be sure to write down the serial numbers of the radio. You will find the numbers on the stickers on the back of or on top of the radio housing. The serial number will start with “BP 2258 X XXXXXX”, the “x’s” being a series of numbers. Should be 12 numbers.
Now the fun part! There are two resources to get the code for your Blaupunkt factory GTO radio using the serial numbers you retrieved as described above. My first choice is here: https://1337vending.com/radiocode/ This website works for American vehicles and should spit the code out and work for you just fine. Enter your serial number and receive the 4-digit code for your Blaupunkt radio. My second choice if the above link does not work is here: https://ukbookshelf.co.uk/gto This is guaranteed to work with money refunded if unsuccessful. The price is affordable and will save you hours of headaches. Be sure to write down your radio 4-digit code, and proceed to the final step.
Install the new replacement radio. Gently push the radio into place and you will feel and hear the radio snap into place. Turn the radio on and enter the 4-digit code using the numbered 1-6 buttons under the LCD screen. Enjoy!

Note: I hope you found the information contained on this website useful. Many hours of time and research have gone into building this website. Please feel free to donate to Mark Quitter Racing. Donations will be used to pay for website services or for any other practical use per your request which can be filled out on the PayPal donation link. There is no minimum amount, and your contribution is greatly appreciated. Donate here.

The post 2004-2006 GTO Factory Radio Code first appeared on Mark Quitter Racing.

GM OBD Trouble Codes

Mark Quitter — Sat, 11 Oct 2025 20:35:40 +0000

GM OBD TROUBLE CODES

Note: For GM Trouble Codes P0001 – P0999 click here

GM Code List P1000-P1299

NOTE: For some code numbers, there may be more than one definition because the same number may be used for different faults on different model years or models.

P1031….O2 Sensor heater control circuit problem

P1105….Secondary Vacuum Sensor circuit

P1106….MAP sensor circuit voltage intermittent high or low

P1107….MAP sensor voltage intermittent low

P1108….BARO to MAP sensor circuit comparison too high

P1109….Secondary port throttle system

P1111….Intake Air Temperature Sensor circuit intermittent high voltage

P1112….Intake Air Temperature Sensor circuit intermittent low voltage

P1113….Intake Resonance Switchover Valve Control

P1114….Engine Coolant Temperature intermittent high or low

P1115….Engine Coolant Temperature intermittent high or low

P1116….Engine Coolant Temperature erratic

P1117….Engine coolant temperature below minimum voltage/254 F

P1118….Engine coolant temperature above maximum voltage/-40 F

P1119….Engine coolant temperature out of range

P1120….Throttle position sensor 1 circuit

P1121….Ignition control module 4X circuit, or TPS out of range

P1122….Ignition control module 4X circuit, or TPS out of range

P1125….Average Pump Period system, or pedal position system

P1133….A/C pressure sensor high voltage, or O2 sensor bank 1 sensor 1 sluggish

P1134….5 volt reference 2 voltage low, or O2 sensor bank 1 sensor 1

P1135….O2 Sensor 1 bank 1 reading lean, or 4/5 shift solenoid stuck on

P1136….5 volt reference 2 circuit, or O2 sensor bank 1 sensor 1 rich

P1137….O2 Sensor low voltage during power enrichment

P1138….O2 Sensor high voltage during decel fuel cutoff

P1139….Brake booster vacuum sensor (low vacuum)

P1139….O2 Sensor insufficient switching (Bank 1 Sensor 2)

P1140….O2 Sensor Sluggish (Bank 1 Sensor 2)

P1141….O2 Sensor Heater Control circuit (Bank 1 Sensor 2)

P1143….O2 Sensor reading lean or low voltage (Bank 1 Sensor 3)

P1144….O2 Sensor reading rich or high voltage (Bank 1 Sensor 3)

P1145….O2 Sensor sluggish (slow crosscounts) (Bank 1 Sensor 3)

P1153….A/C pressure sensor low voltage

P1153….O2 Sensor low switching (Bank 2 Sensor 1)

P1154….O2 Sensor low transition time (Bank 2 Sensor 1)

P1155….A/C evap temperature switch high voltage

P1155….O2 Sensor reading lean (Bank 2 Sensor 1)

P1156….A/C high pressure switch high voltage

P1156….O2 Sensor reading rich (Bank 2 Sensor 1)

P1157….O2 Sensor rich or high voltage (Bank 2 Sensor 2)

P1158….O2 Sensor rich or high voltage (Bank 2 Sensor 2)

P1158….Engine over temperature protection fault

P1159….O2 Sensor crosscounts (Bank 2 Sensor 2)

P1161….O2 Sensor heater control circuit (Bank 2 Sensor 2)

P1163….O2 Sensor reading lean or low voltage (Bank 2 Sensor 3)

P1164….O2 Sensor reading rich or high voltage (Bank 2 Sensor 3)

P1165….O2 Sensor crosscounts (Bank 2 Sensor 3)

P1170….Bank to bank fuel trim offset

P1171….Fuel system lean during acceleration

P1185….Engine Temperature Sensor circuit

P1186….Engine Oil Temperature circuit performance

P1187….Engine Oil Pressure Sensor circuit low voltage,

P1188….Engine Oil Pressure Sensor circuit voltage high

P1189….Engine Oil Pressure Switch circuit

P1190….Vacuum leak

P1191….Intake air duct leak

P1200….Injector control circuit

P1211….Mass Airflow circuit intermittent high

P1212….Mass Airflow circuit intermittent low

P1214….Injection Pump Timing Offset

P1215….Ground fault detection indicated (generator driver circuit)

P1216….Fuel Solenoid response time too short

P1217….Fuel Solenoid response time too long

P1218….Injection Pump calibration circuit

P1219….Throttle Position Sensor reference voltage

P1220….Throttle Position Sensor circuit fault

P1221….Fuel pump second circuit low

P1121….Throttle position sensor circuit performance

P1222….Injector circuit cylinder 1 intermittent

P1225….Injector circuit cylinder 2 intermittent

P1228….Injector circuit cylinder 3 intermittent

P1231….Injector circuit cylinder 4 intermittent

P1234….Injector circuit cylinder 5 intermittent

P1237….Injector circuit cylinder 6 intermittent

P1240….Injector circuit cylinder 7 intermittent

P1243….Injector circuit cylinder 8 intermittent

P1250….Early fuel evaporation heater circuit

P1257….Boost Control fault, or supercharger overboost

P1258….Engine over temperature protection, or low coolant fuel disable

P1260….Fuel Pump Speed Relay control circuit, or last test failed speed control circuit

P1271….Accelerator Pedal Position Sensor 1-2 correlation

P1272….Accelerator Pedal Postion Sensor 2-3 correlation

P1273….Accelerator Pedal Position Sensor 1-3 correlation

P1274….Injection wiring incorrect

P1275….Acceleration position sensor 2 circuit, or boost control

P1276….Accelerator Pedal Positioning Sensor 1 circuit

P1280….Accelerator Pedal Positioning Sensor 2 circuit

P1281….Accelerator Pedal Positioning Sensor 2 circuit out of range

P1285….Accelerator Pedal Positioning Sensor 2 circuit

P1286….Accelerator Pedal Positioning Sensor 2 circuit out of range

GM Code List P1300-P1499

NOTE: For some code numbers, there may be more than one definition because the same number may be used for different faults on different model years or models.

P1300….Ignition coil 1 primary feedback circuit

P1305….Ignition Coil 2 primary feedback circuit

P1310….Ignition Coil 3 primary feedback circuit

P1315….Ignition Coil 4 primary feedback circuit

P1320….Distributorless ignition 4X signal intermittent

P1321….Electronic ignition system fault

P1322….Electronic ignition system control missing

P1323….Loss of high resolution rpm signal

P1324….Crank rpm too low

P1335….Crankshaft positioning sensing circuit

P1336….Crankshaft position system variation not learned

P1345….Camshaft to crankshaft position correlation fault

P1346….Crankshaft sensor system variation not learned, or intake camshaft position out of range

P1349….Intake Camshaft position system

P1350….Ignition control system

P1351….Ignition control circuit voltage high

P1351….Ignition control circuit open

P1352….Bypass circuit open or voltage high

P1353….ignition control output high/pulse detected when ground cylinder #3

P1354….ignition control output high/pulse detected when ground cylinder #4

P1355….ignition control output high/pulse detected when ground cylinder #5

P1356….ignition control output high/pulse detected when ground cylinder #6

P1357….ignition control output high/pulse detected when ground cylinder #7

P1358….ignition control output high/pulse detected when ground cylinder #8

P1359….Ignition Coil group 1 control circuit

P1360….Ignitiion Coil group 2 control circuit

P1361….Ignition control cylinder #1 not toggling after enabIe, or low voltage

P1362….Ignition control cylinder #2 not toggling after enabIe, or low voltage, or bypass circuit shorted or

low voltage

P1363….Ignition control cylinder #3 not toggling after enabIe, or low voltage

P1364….Ignition control cylinder #4 not toggling after enabIe, or low voltage

P1365….Ignition control cylinder #5 not toggling after enabIe, or low voltage

P1366….Ignition control cylinder #6 not toggling after enabIe, or low voltage

P1367….Ignition control cylinder #7 not toggling after enabIe, or low voltage

P1368….Ignition control cylinder #8 not toggling after enable, or low voltage

P1370….Too many ignition reference pulses

P1371….Too few ignition reference pulses

P1372….Crankshaft Position Sensor A-B correlation

P1374….Crankshaft position sensor, 3X Reference circuit

P1375….24X Reference circuit voltage too high

P1376….Reference voltage low, or ignition ground circuit

P1377….Ignition control module CAM pulse to 4X reference pulse comparison

P1380….ABS rough road/misfire diagnosis prevented

P1381….Misfire detected, no EBCM/PCM serial data

P1401….Exhaust Gas Recirculation flow test fault

P1403….Exhaust Gas Recirculation Solenoid 1 error

P1404….Exhaust Gas Recirculation Solenoid 2 error

P1405….Exhaust Gas Recirculation Solenoid 3 error

P1406….Exhaust Gas Recirculation pintle position error

P1407….EGR valve air leak

P1408….EGR valve vacuum failure

P1409….EGR valve vacuum leak

P1410….EGR valve vacuum restriction, or fuel tank pressure system

P1415….AIR system Bank 1

P1416….AIR system Bank 2

P1431….Fuel Level Sensor 2 circuit

P1432….Fuel Level Sensor 2 circuit low voltage

P1433….Fuel Level Sensor 2 circuit voltage high

P1441….EVAP Canister continuous open purge flow, or high voltage during non-purge

P1442….EVAP monitor circuit/vacu um switch high voltage

P1450….Barometric Pressure Sensor (BARO) circuit

P1451….Barometric Pressure Sensor performance

P1460….Cooling Fan control system, or misfire detected (Catera only)

P1483….Engine cooling system performance

GM Code List P1500-P1699

NOTE: For some code numbers, there may be more than one definition because the same number may be used for different faults on different model years or models.

P1500….Starter signal circuit

P1501….Vehicle speed sensor circuit intermittent, or Theft deterrent system

P1502….Theft deterrent system no password received

P1503….Theft deterrent system password improper

P1508….IdIe Air Control system — idle too low

P1509….IdIe Air Control system — idle too high

P1510….Backup power supply

P1511….Throttle Control System – backup system performance

P1514….Airflow to throttle position sensor too high

P1515….Electronic throttle module throttle position

P1516….Electronic throttle module throttle position

P1517….Electronic throttle module, or TAC module fault

P1518….No communication between electronic throttle module and PCM

P1519….Throttle Actuator Control Module

P1520….Park/Neutral Switch circuit, gear indicator system

P1523….Electronic throttle control throttle return

P1524….Throttle Position Sensor out of range or misadjusted

P1525….Throttle Body Service required

P1526….Throttle position learn process not complete

P1527….Transmission range/pressure switch comparison

P1528….Governor control system

P1530….Ignition timing adjustment switch circuit, or A/C Refrigerant Pressure Sensor error

P1531….A/C low refrigerant

P1532….Engine coolant temperature sensor intermittent, or A/C Evaporator Temperature circuit low

voltage

P1533….A/C Low Side Temperature Sensor circuit

P1535….A/C High Side Temperature Sensor circuit

P1536….A/C system ECT over temperature

P1537….A/C request circuit voltage low

P1538….A/C request circuit voltage high

P1539….A/C High Pressure Switch circuit voltage high

P1540….A/C system high pressure

P1542….A/C system high pressure or high temperature

P1543….A/C system performance out of range

P1545….A/C Clutch Relay Control circuit

P1546….A/C Clutch Relay control circuit voltage low

P1550….Cruise control, motor actuator circuit

P1554….Speed Control status circuit

P1555….Elecrtric Variable Orifice fault (Saturn)

P1558….Speed Control (SPS low)

P1560….Speed Control System/Transaxle not in Drive

P1561….Speed Control Vent Solenoid

P1562….Speed Control Vacuum Solenoid

P1564….ECM battery voltage loss (Catera only), or speed control system/vehicle acceleration too high

P1565….Speed Control Servo Position Sensor

P1566….Speed Control System/Engine RPM too high

P1567….Speed Control Master Switch

P1568….Speed Control (SPS high)

P1570….Speed Control System/Traction Control active

P1571….Traction Control System desired torque circuit

P1572….Traction Control System active circuit voltage low too long

P1573….PCM/EBTCM serial data circuit communication malfunction

P1574….EBTCM system/stop lamp circuit voltage high

P1575….Stop lamp control circuit (97-98 Corvette only), or extended travel brake switch circuit voltage

high

P1576…..Brake Booster Vacuum Sensor circuit voltage high

P1577….Brake Booster Vacuum Sensor circuit voltage low

P1578….Brake Booster Vacuum Sensor circuit low vacuum

P1579….Park/Neutral to Drive/Reverse at high throttle angle

P1580….Cruise Control Module move circuit, low voltage

P1581….Cruise Control Module move circuit, high voltage

P1582….Cruise Control Module direction circuit, low voltage

P1583….Cruise Control Module direction circuit, high voltage

P1584….Cruise control disabled

P1585….Cruise Control inhibit output circuit

P1586….Cruise Control Brake Switch 2 circuit

P1599….Engine stall detected

P1600….Powertrain control module battery, or loss of communication between PCM and TCM

P1601….ECM over temperature

P1602….PCM to ABS module communication problem

P1603….Serial data communication problem

P1604….IPC Serial data communication problem

P1605….Serial data communication problem with HVAC module

P1607….Engine Oil Level Switch circuit

P1610….Loss of PZM serial data, or failure of body function controller (1997 Cutlass & Malibu only)

P1611….Loss of CVRTD serial data

P1617….Engine Oil Level Switch circuit

P1619….Engine Oil Life Monitor reset circuit, or oil life error

P1620….Engine coolant low (Saturn)

P1621….Powertrain control module memory error, or VCM EEPROM performance (1998 5.7L only)

P1623….PCM Prom error, or Transaxle Temperature Sensor fault (Saturn)

P1624….Powertrain control module software reset, or customer snapshot data available (Saturn)

P1625….Powertrain control module system reset, or TCM flash checksum fault (Saturn)

P1626….Anti-theft system fuel enable circuit (Passkey error)

P1627….A/D performance, or Powertrain Control Module fault

P1628….PCM Engine Control Temperature Pull-up Resistor, or Engine Coolant Temperature Sensor

circuit resistor fault

P1629….Anti-theft devide cranking signal or Passkey cranking error

P1630….System voltage too high/too low, or ECM immobilizer learning mode (Cavalier & Monte Carlo

only)

P1631….Oxygen sensor #1 slow response, or anti-theft password incorrect

P1632….Anti-theft fuel disable signal received

P1633….Ignition power circuit low voltage

P1634….Ignition power circuit low voltage

P1635….5 volt reference voltage to sensors low

P1636….Powertrain control module fault

P1637….Alternator warning lamp control signal “L” terminal problem

P1638….Alternator Field (F) terminal circuit

P1639….Powertrain Control Module 5 volt reference voltage low

P1640….Powertrain control module fault

P1641….EVAP fuel tank pressure sensor circuit voltage high, or fan 1 relay control circuit, or MIL light
circuit, or A/C compressor clutch relay circuit

P1642….Fan control relay, or vehicle speed sensor output, or secondary air injection relay fault (96
Lumina/Monte 3.4L)

P1643….Powertrain control module fault

P1644….Throttle position sensor circuit, or traction control fault

P1645….Boost control solenoid circuit, or EVAP solenoid output circuit

P1646 ….Powertrain control module fault (quad driver 1)

P1647….Powertrain control module fault (quad driver 1)

P1650….Powertrain control module fault (quad driver 2)

P1651….Powertrain control module fault (quad driver 2), or cooling fan relay 1

P1652….Cooling fan relay 2, or suspension control module (Cadillac only)

P1653….Traction control circuit (Pontiac), or fuel gauge control circuit (Chevy except Caprice), or engine
oil level warning lamp (Caprice & 99 Olds Silhouette only)

P1654….A/C relay circuit, or cruise control disable output circuit

P1655….Powertrain control module fault (quad driver 2), or EVAP canister purge valve

P1656….Powertrain control module fault (quad driver 2), or wastegate solenodi control circuit (turbo
models only)

P1657….Powertrain control module fault (quad driver 2), or skip shift solenodi control circuit

P1660….Cooling fan circuit,or powertrain control module fault

P1661….EVAP fuel tank pressure sensor circuit, or Check Engine Light circuit, or PCM quad driver fault

P1662….PCM quad driver fault, or cruise control circuit

P1663….Alternator warning lamp circuit, or oil change warning lamp circuit

P1664….Powertrain control modeul fault (quad driver 3), or fuel cutoff solenoid

P1665….Powertrain control module fault (quad driver 3), or EVAP canister vent valve

P1667….Powertrain control module fault (quad driver 3), or reverse inhibit solenoid control circuit

P1670….Powertrain control module fault (quad driver 4)

P1671….Malfunction Indicator Lamp (MIL) circuit fault

P1672….Powertrain control module fault (quad driver 4), or low engine oil level lamp control circuit

P1673….Powertrain control module fault (quad driver 4), or engine hot lamp control circuit

P1674….Powertrain control module fault (quad driver 4), or tachometer control circuit

P1675….EVAP vent solenoid controlcircuit

P1676….Powertrain control module fault (quad driver 4), or EVAP canister vent valve

P1677….Powertrain control module fault (quad driver 4)

P1680….Powertrain control module fault

P1681….Powertrain control module fault

P1682….Powertrain control module fault

P1683….Powertrain control module fault

P1684….Powertrain control module fault

P1685….Powertrain control module fault

P1686….Powertrain control module fault

P1687….Powertrain control module fault

P1689….Traction Control System delivered torque control circuit

P1690….Powertrain control module loop overrun

P1691….Coolant gauge circuit voltage low

P1692….Coolant gauge circuit voltage high

P1693….Tachometer circuit voltage low

P1694….Tachometer circuit voltage high

P1695….Remote keyless entry circuit

P1696….Remote keyless entry circuit

GM Code List P1700-P1899

NOTE: For some code numbers, there may be more than one definition because the same number may
be used for different faults on different model years or models.

P1700….Malfunction Indicator Lamp requested by trans control module\

P1701….Malfunction Indicator Lamp request circuit

P1740….Torque control/management request circuit

P1760….Transmission Control Module supply voltage interrupted

P1780….Park/Neutral Position Switch circuit

P1781….Engine torque signal circuit

P1792….ECM to Transmission Control Module engine coolant signal

P1800….ECM to Transmission Control Module engine coolant signal

P1810….ATF pressure manual valve powition switch malfunction

P1811….Long shift and maximum adaptation limit reached

P1812….TOT condition

P1814….Torque converter clutch (TCC) overstress

P1819….Transmission range switch out of range, possible no start

P1820….Transmission range switch A voltage low

P1822….Transmission range switch B voltage high

P1823….Transmission range switch P voltage low

P1825….Transmission range switch A, B, C & P signals invalid

P1826….Transmission range switch C voltage high

P1835….Kickdown Switch circuit

P1842….1-2 Shift Solenoid circuit low input\

P1843….1-2 Shift Solenoid circuit high input

P1845….2-3 Shift Solenoid circuit low input

P1847….2-3Shift Solenoid circuit high input

P1850….Brake Band Aply Solenoid

P1860….Torque Converter Clutch (TCC) PWM Solenoid circuit

P1864….TCC Enable Solenoid circuit

P1868….Transmission Fluid life

P1870….Transmission component slipping

P1873….Oxygen sensor bank 2 sensor 2 crosscounts

P1874….Oxygen sensor bank 1 sensor 3 crosscounts

P1875….4IND Low Switch circuit electrical

P1886….Transaxle Shift, Timing Solenoid performance

P1887….TCC Release Switch malfunction

P1890….Throttle Position signal input

P1891….Throttle position sensor circuit signal low

P1892….Throttle position sensor circuit signal high

P1895….Engine torque delivered circuit

Buy Online at AdvanceAutoParts.com, Pick Up Instore in 30 minutes! No code required.

The post GM OBD Trouble Codes first appeared on Mark Quitter Racing.

LED Lighting – Exterior

Mark Quitter — Sat, 11 Oct 2025 19:10:14 +0000

Exterior lighting for vehicles has come a long way over the years. The ability to see the road at night, as well as seeing other cars, and other cars being able to see you while night driving is and always has been extremely important. There is no guarantee that every street, road, and highway you are traveling on will have the proper street lighting to ensure a highly visible area for you to drive on. And let’s face it, as human beings, our eyes are not made to see in the dark, hence the term “Let there be light”.

Traditional bulbs in vehicles use a glass casing with a filament that light ups when electricity is applied. The output of the light from bulbs will often give a “yellow” look for headlights, and on tail lights, parking lamps, turn signals, and brake lights, the bulbs are relying on the color of the housing they are being plugged into. In other words, the bulb filament lights, and then that light must shine through a red tail light or brake light before being seen. The already “yellow” look of the bulb light must pass through another obstacle, dulling down the amount of light even more before it is visible. Doesn’t sound very safe, does it? Of course, we will all think, just like an interior light bulb in your house, we will just put a brighter bulb in and it will be brighter. This concept, of course, looks great on paper, but unfortunately, the auto parts makers leave us with usually just a couple of options for headlights, tail lights, and brake lights you usually get one option for a replacement bulb.

HID Headlights

With forward movement in technology, HID (High-Intensity Discharge) lighting for headlights became available. With this technology, a broad range of different colors and color depths became available for you to install on your vehicle to light up the road better. The HID conversion kits need to be wired into the electrical system. Also, HID lights are not “instant on”, they need to warm up to achieve maximum brightness. These lights came in a variety of colors including Purple, Blue, Yellow, and other shades. I’m not really sure how having Purple or Yellow headlights is going to light up the road better or make your night driving experience any safer, but yet you have that option. Unfortunately, these were not “plug and play” kits, and some wiring is needed to install them. Below I found this kit on eBay for $29.99 for a 2006 Pontiac GTO. Please inspect the images and then continue reading.

Doesn’t that look fun to install? Not really sure I trust a $29.99 product that needs this many wires just to light a headlight. Now check out the colors it comes in:

How will those colors improve my night driving vision and increase my safety? They won’t! You would be better off taping two flashlights to the hood of your car. In fact, two quality flashlights would cost more than this HID Headlight kit. This is a pure example of “You Get What You Pay For”.

…..And the Clouds Parted, and Plug and Play LED Automotive Lights Were Born

LED stands for Light Emitting Diode. LED lights use 85% less energy than a halogen bulb. LED lights also produce just as much, if not more light while using less energy. LED lights are also “instant on”. They do need to warm up to achieve the brightest output. Light in its purest form should be white. Not Purple, not Yellow, but a nice bright white illuminating what the light is directed at without producing glare or yellow look. I found the following light bulbs and LED light information on https://superbrightleds.com:

Light Bulbs

Incandescent bulbs use—at most—10 percent of the energy they consume to make visible light; the other 90 percent is wasted heat.
They produce a considerable amount of infrared (IR) and ultraviolet (UV) radiation that can be damaging to fabrics and artwork over time.
They’re designed to last around 1,200 hours.
Incandescent bulbs have a fragile glass envelope and brittle filament wire.
These bulbs are relatively cheap but consume so much energy that standard 40- and 60-watt options are no longer available for purchase in the U.S.
They create a warm yellow light.

LED Lighting

LEDs run much cooler than incandescent and halogen bulbs, which greatly increases their longevity and enables them to function in cold temperatures.
Unless an LED is specifically infrared (IR) or ultraviolet (UV), it produces little to no IR or UV radiation, which can be damaging to fabrics and artwork.
They can last up to 50,000 hours—42 times longer than incandescent bulbs and 13 times longer than halogen bulbs.
Power consumption is the lowest compared to all other lighting technologies—80 percent less than incandescent bulbs and 75 percent less than halogen bulbs.
The shatterproof bulbs are shock-resistant and have no brittle filaments.
LEDs require a higher initial investment but produce greater energy returns over time.
LEDs contain no mercury, harmful gasses, or toxins.
They are available in many different whites and colors.
Because of their low power consumption, LEDs are great alternative lighting solutions for solar-powered systems.

Just in the last 5 years, automotive LED lighting has come a long way. The need for conversion kits has disappeared, and the introduction of true plug-and-play LED lighting replacement has arrived. What this means is simply to replace the bulb with an LED light. No wiring is needed. Applications are available now for almost any vehicle, and it literally is as easy as changing a light bulb.

After many hours of research, I have found the best lighting application for your 2004-2006 Pontiac GTO. Diode Dynamics has done all the research for us. Changing all of your exterior lights to LED lighting is the smartest and safest improvement you can do to make driving a night more pleasurable, as well as feeling safe that you can see the road better, and other cars can see you. Please watch the video below to get the full details on how LED lighting works for both vision and safety:

Diode Dynamics offers a full list of videos for you to watch explaining every aspect of their product as well as their company. You can visit the Diode Dynamics YouTube Channel here.

As you can see, Diode Dynamics offer true LED plug-and-play replacement lighting for your vehicle. No cutting, no wiring, simply remove your current light bulb and replace it with the new LED light. The new LED light will plug into your factory plug socket, and the light will fit in the housing just like any factory bulb.

2004-2006 Pontiac GTO Exterior Lights Parts List:

PART	LUMENS	COLOR TEMPERATURE	PART NUMBER
Headlights	1630 per bulb	6000K – Cool White	H11 SL1 LED Bulbs (pair)
Fog Lights	1630 per bulb	6000K – Cool White	H10 SL1 LED Bulbs (pair)
High Beam Headlights	1630 per bulb	60000K – Cool White	H9 SL1 LED Bulbs (pair)
Front Turn Signals – Switchback (Stay white when park lights or headlights are on until turn signal is activated)	410 per bulb	Bright White/Amber	Switchback Turn Signal LEDs for 2004-2006 Pontiac GTO (pair)
Front Turn Signals – Regular	510 per bulb	Amber	Front Turn Signal LEDs for 2004-2006 Pontiac GTO (pair)
Sidemarker Lights – Front Bumper	Unknown	Amber	Sidemarker LEDs for 2004-2006 Pontiac GTO (pair)
Tail Lights	510 per bulb	Red	Tail Light LEDs for 2004-2006 Pontiac GTO (pair)
Back Up/Reverse Lights	830 per bulb	6000K – Cool White	Backup LEDs for 2004-2006 Pontiac GTO (pair)
Rear Turn Signals	510 per bulb	Amber	Rear Turn Signal LEDs for 2004-2006 Pontiac GTO (pair)
License Plate Lights	92 per bulb	Cool White or Pure White	License Plate LEDs for 2004-2006 Pontiac GTO (pair)

Relay Needed To Prevent Hyper Blinking With LED Turn Signal Lights

PART	DESCRIPTION	PART NUMBER
LED Flasher Relay	Replaces factory flasher relay to prevent turn signals from hyper-blinking. Installs in the fuse box under the driver’s side dashboard. Instructions below in turn signal installation.	LED Flasher for 2004-2006 Pontiac GTO

The LED Difference – Headlight/Fog Light Installation

Step 1: Visit Diode Dynamics and purchase the following:
Low Beam Headlights
High Beam Headlights
Fog Lights

DOWNLOAD (.pdf format):
Diode Dynamics LED Headlamps Installation Guide

Optional: I personally did not replace the high beam headlights with LED lights. The low beam in conjunction with the fog lights and factory High beam lights light up the road plenty. But if you really want to put some light on the road, high beam LED’s are available.

Step 2: Headlight installation is fairly straightforward. On the driver’s side, if you have the factory (stock) airbox and air filter, you will need to remove the airbox to get behind the headlight assembly to remove the bulb. If you have a K&N Cold Air Intake on your vehicle, you should be able to reach the headlight bulb without removing anything. Remove the dust cover cap that covers the headlight bulb. Turn the Headlight bulb counterclockwise to unlock the locking tabs and pull straight out. Disconnect the low beam wiring plug from the low beam headlight bulb. Install the new LED light into the headlamp assembly. Be sure to line up the locking tabs and use slight pressure to push forward and turn clockwise to lock into place. Be sure the LED light is inserted per the instructions to get the maximum lighting effect. After the new led headlight is installed, you can re-install the headlight dust cover. The nice thing about the plug-and-play LED lights is they do fit just like the factory bulbs and the headlight dust covers can be installed. Repeat all the steps for both the low beam and high beam headlights.

On the passenger’s side, you will need to remove the battery to access the headlight assembly bulbs. Repeat the above steps.

Fog Lights

Step 1: The fog lights may take a bit more time to install. I actually had to modify the locking tabs on the new LED light to get it to properly seat and lock into place. You may not have to do this. Nothing has to be removed to change the fog light bulbs. Simply reach under the front bumper and turn the bulb counterclockwise to release the bulb from the fog light assembly. Disconnect the light from the wiring plug. Before connecting the plug to the new LED light, check the fit. If the new SL1 H10 LED light fits and locks into place, connect the wiring plug, zip tie any extra wiring in place, and you are done. If you find you can not get the new LED light to lock in place, follow these steps.

DOWNLOAD (.pdf format):

Diode Dynamics LED Bulb Installation

1) Compare the new SL1 H10 locking collar to the factory/stock locking collar. You will see the tabs don’t quite line up. Also, the overall thickness of the SL1 LED lock collar is slightly thicker than the factory/stock locking collar bulb.

Note: For the following steps you can use either a bench grinder or Dremel Tool to do a bit of modifying on the lock collar. This will not void your warranty on your product.

2) Remove the lock collar from the SL1 H10 LED light. Sand down the front of the lock collar making the collar itself a little bit thinner. The front of the collar will have lettering on it. Sand until all the lettering is gone. Do not sand down the backside. If you sand down the backside the lock collar will drop down farther making the light very hard to lock in place.

3) Sand down the 2 larger locking tabs themselves making the width of the locking tabs a bit smaller. There are 3 locking tabs total, 1 smaller, and 2 larger tabs. The smaller tab lines up just fine. The 2 larger tabs are a bit wider than the factory/stock locking collar. This will give more wiggle room to lock in the collar into the fog light housing. Sand down only one side of the tabs. Compare them to the factory bulb. Sand just a little at a time. You do not need to take much off. Just sand enough that all the locking tabs fit nicely into the fog light housing. Check the fit, lock your new LED light into place, use zip ties to neatly tuck away the wires, and you’re done.

DOWNLOAD (.pdf format):
Diode Dynamics LED Bulb Installation

The LED Difference – Tail Lights/ Reverse Lights Installation

Step 1: Visit Diode Dynamics and purchase the following:
Backup Lights
Tail Lights
Step 2: Open your trunk. On the tail light housing, you will see two (2) Phillips head screws. Remove the screws. Gently pull from where you removed the screws, but do not pull hard or remove the tail light assembly yet. Once the tail light is loose, push the tail light forward and slightly diagonally to remove it from the clip that is holding it into place. You may want to use masking tape on the paint around the housing to prevent scratching your vehicle. You do not need to push hard. Once the tail light is free, place a towel under the assembly and just let the tail light hang (it doesn’t weigh much), or just go ahead and disconnect all the lights by twisting counterclockwise on the socket from the tail light assembly.
Step 3: Replace the backup light and tail light with the new LED light bulbs. Be sure the bulbs lock into place in the sockets. Plug the socket back into the tail light housing by lining up the locking tabs and turning clockwise to lock it into place.
Step 4: Re-assemble the tail light housing. Lock in the tab on the front of the tail light first, then gently push the tail light into place, being sure the mounting screw holes line up. Before installing the 2 Phillip screws, make sure the lip of the trunk weatherstrip is slightly over the tail light housing. Insert the screws and hand tighten. Repeat all the steps for the opposite side tail light.

The LED Difference – Front Side Markers Lights Installation

Step 1: Visit Diode Dynamics and purchase the following:
Sidemarker Lights
Step 2: This is an extremely easy install. Simply reach under the front bumper to reach the side marker light. Turn the light socket counterclockwise to remove the socket and bulb from the side marker assembly. Pull out the factory bulb, literally (these bulbs do not twist in, just pull straight out). Plug the new LED light into the bulb socket. Reinstall the socket into the side marker assembly by lining up the tabs and turning clockwise to lock it into place. Piece of cake!

The LED Difference – License Plate Lights Installation

This installation project will take you longer to open the package of new lights than it does to actually install the lights. By far this is the easiest LED installation on the 2004-2006 Pontiac GTO.

Step 1: Visit Diode Dynamics and purchase the following:
License Plate Lights

Note: I personally purchased the “pure white” bulbs over the “cool white”. I think they are a bit brighter than the cool white look. The choice is entirely yours and what colors to pick.
Step 2: Open your trunk and observe the license plate lights housing. There is a tab on the inside (license plate side) of the housing. Using your finger, pull the tab to the opposite side and pull down. The license plate light assembly will come right out. Turn the light socket counterclockwise to remove the light socket. Pull out the factory light bulb (Pull straight out. These bulbs plugin not twist in). Install the new LED light into the light socket. Re-install the light socket by lining up the tabs and turning clockwise to lock them into place.
Step 3: Re-install the license plate light assembly by sliding in the end opposite of the locking tab first (the outside/tail light side). There is a slight tab that will hold it in place. Then simply push up and lock the license plate light assembly back into place. Repeat all steps for the other side. Doesn’t get much easier.

The LED Difference – Turn Signals Front and Back Installation

When switching over to LED turn signals on a vehicle that came stock with bulbs, a change to the electrical system needs to be made. It only involves changing a relay fuse and is extremely easy to do.

LED lights as we learned earlier use much less energy than traditional bulbs. Your vehicle will detect when a turn signal bulb has burnt out. The vehicle’s electrical system senses that fewer amps are being used, and your turn signal will hyper blink on the dashboard. Rapid turn signal flashing on the dashboard will occur, telling the driver that a turn signal is not working, and more than likely needs a bulb replacement.

When switching these turn signal bulbs to LED lights, your vehicle is sensing the extra low current from the LED lights and will react as though the light bulbs are burnt out, and your car will engage hyper blinking when using the turn signals. To rectify this, you must change the Flasher Relay on the fuse box to an LED Flasher Relay.

This Relay is extremely simple to replace. The fuse box on 2005-2006 Pontiac GTO’s is located on the driver’s side, under the steering column. Pull down the cover under the steering wheel gently from the top. There are locking tabs on the left and right sides of the cover. Lower the fuse box panel cover, you do not need to completely remove the cover. On the left side, you will see the fuse panel.

2004-2006 Pontiac GTO’s all use the same fuse box. The Relay you need to replace is Number 3 “Flasher Relay (3 PIN)” on the diagram below:

Note: Do not replace the Flasher Relay unless you have replaced ALL of the turn signal bulbs with LED Lights. You can not replace just the fronts or back. Both front and back must be replaced at the same time along with changing the Flasher Relay to an LED Flasher Relay to prevent hyper blinking and ensure your turn signals are working properly.

Installation:

Step 1: Visit Diode Dynamics and purchase the following:
LED Flasher: CF15
Rear Turn Signals
Front Turn Signals
Step 2: The front turn signals should be fairly easy to access. On the driver’s side, you may have to remove the factory air box to get access to the turn signal bulb. Owners with K&N Cold Air Intakes should not need to remove anything. Turn the turn signal bulb counterclockwise to remove the bulb and socket from the headlamp assembly. Simply twist out the factory bulb out of the socket and replace it with the new LED light. Re-install the socket into the headlamp assembly by lining up the locking tabs and turning clockwise to lock them into place. On the passenger side, you may need to remove the battery to access the turn signal bulb. Smaller hands have an advantage here. Repeat the previous steps to install your new LED light.
Step 3: The rear turn signal bulbs are accessed the same way the taillights and backup lights were replaced. Open the trunk and remove the two (2) Phillips head screws that hold in the tail lamp assembly. You may want to use masking tape on the paint around the assembly before continuing to the next step to prevent paint damage. Gently pull the end the screws were in out, but not all the way. Push the tail light assembly forward and at a slight angle to remove the tail lamp assembly from its locking tab. Put a towel under the tail light assembly and let hang. Remove the turn signal bulb and socket by turning counterclockwise to release the socket from the tail light assembly. Twist out the factory bulb and replace it with the new LED light. Re-install the bulb and socket by lining up the locking tabs and then turn clockwise to lock the bulb socket in place. Re-install the tail lamp assembly by locking in the tab first, then push the tail lamp assembly into place, lining up the holes for the two Phillips head screws. Before tightening the screws, be sure the lip of the trunk weatherstrip is slightly over the tail lamp assembly. Install the two Phillips head screws and hand tighten. Repeat all steps for the other side.
Step 4: Replace the Flasher Relay on the fuse panel with the new LED Flasher Relay as per Fig. 30 in the instructions above. This will prevent hyper-blinking and ensure your turn signals are working properly.

Conclusion

Changing the exterior lights on your vehicle to LED lighting will greatly improve your night driving vision. I realize this may be a costly upgrade, but how much is it worth to you to be able to see the road better, and know other drivers can see you? LED lighting uses less energy and does not need to warm up to become bright. Your car battery will thank you, and your eyes will thank you for the improved night vision. Do your own homework. Watch the video’s supplied by Diode Dynamics. Don’t be fooled by cheap imitation halogen bulbs that claim to be just as bright as LED lighting. As the sayings go, “The proof is in the pudding”, and “You get what you pay for”.

For more LED lighting alternatives, check out the LED Lighting Interior article found on this website.

Note: I hope you found the information on this website useful. Many hours of time and research have gone into building this website. Please feel free to donate to Mark Quitter Racing. Donations will be used to pay for website services that are used to keep this site current and online. Your support is greatly appreciated.

The post LED Lighting – Exterior first appeared on Mark Quitter Racing.

OBD2 Trouble Codes – Generic

Mark Quitter — Sat, 11 Oct 2025 05:13:44 +0000

GENERIC OBD-II TROUBLE CODES

Note: For GM Trouble Codes P1000 – P1299 click here

DTC CODES P0001 to P0999

P0010….’A’ Camshaft Position Actuator Circuit (Bank 1)

P0011….’A’ Camshaft Position – Timing Over-Advanced or System Performance (Bank 1)

P0012….’A’ Camshaft Position – Timing Over-Retarded (Bank 1)

P0013….’B’ Camshaft Position – Actuator Circuit (Bank 1)

P0014….’B’ Camshaft Position – Timing Over-Advanced or System Performance (Bank 1)

P0015….’B’ Camshaft Position -Timing Over-Retarded (Bank 1)

P0020….’A’ Camshaft Position Actuator Circuit (Bank 2)

P0021….’A’ Camshaft Position – Timing Over-Advanced or System Performance (Bank 2)

P0022….’A’ Camshaft Position – Timing Over-Retarded (Bank 2)

P0023….’B’ Camshaft Position – Actuator Circuit (Bank 2)

P0024….’B’ Camshaft Position – Timing Over-Advanced or System Performance (Bank 2)

P0025….’B’ Camshaft Position – Timing Over-Retarded (Bank 2)

P0030….HO2S Heater Control Circuit (Bank 1 Sensor 1)

P0031….HO2S Heater Control Circuit Low (Bank 1 Sensor 1)

P0032….HO2S Heater Control Circuit High (Bank 1 Sensor 1)

P0033….Turbo Charger Bypass Valve Control Circuit

P0034….Turbo Charger Bypass Valve Control Circuit Low

P0035….Turbo Charger Bypass Valve Control Circuit High

P0036….HO2S Heater Control Circuit (Bank 1 Sensor 2)

P0037….HO2S Heater Control Circuit Low (Bank 1 Sensor 2)

P0038….HO2S Heater Control Circuit High (Bank 1 Sensor 2)

P0042….HO2S Heater Control Circuit (Bank 1 Sensor 3)

P0043….HO2S Heater Control Circuit Low (Bank 1 Sensor 3)

P0044….HO2S Heater Control Circuit High (Bank 1 Sensor 3)

P0050….HO2S Heater Control Circuit (Bank 2 Sensor 1)

P0051….HO2S Heater Control Circuit Low (Bank 2 Sensor 1)

P0052….HO2S Heater Control Circuit High (Bank 2 Sensor 1)

P0056….HO2S Heater Control Circuit (Bank 2 Sensor 2)

P0057….HO2S Heater Control Circuit Low (Bank 2 Sensor 2)

P0058….HO2S Heater Control Circuit High (Bank 2 Sensor 2)

P0062….HO2S Heater Control Circuit (Bank 2 Sensor 3)

P0063….HO2S Heater Control Circuit Low (Bank 2 Sensor 3)

P0064….HO2S Heater Control Circuit High (Bank 2 Sensor 3)

P0065….Air Assisted Injector Control Range/Performance

P0066….Air Assisted Injector Control Circuit or Circuit Low

P0067….Air Assisted Injector Control Circuit High

P0070….Ambient Air Temperature Sensor Circuit

P0071….Ambient Air Temperature Sensor Range/Performance

P0072… Ambient Air Temperature Sensor Circuit Low Input

P0073… Ambient Air Temperature Sensor Circuit High Input

P0074… Ambient Air Temperature Sensor Circuit Intermittent

P0075… Intake Valve Control Solenoid Circuit (Bank 1)

P0076… Intake Valve Control Solenoid Circuit Low (Bank 1)

P0077… Intake Valve Control Solenoid Circuit High (Bank 1)

P0078… Exhaust Valve Control Solenoid Circuit (Bank 1)

P0079… Exhaust Valve Control Solenoid Circuit Low (Bank 1)

P0080… Exhaust Valve Control Solenoid Circuit High (Bank 1)

P0081… Intake valve Control Solenoid Circuit (Bank 2)

P0082… Intake Valve Control Solenoid Circuit Low (Bank 2)

P0083… Intake Valve Control Solenoid Circuit High (Bank 2)

P0084… Exhaust Valve Control Solenoid Circuit (Bank 2)

P0085… Exhaust Valve Control Solenoid Circuit Low (Bank 2)

P0086… Exhaust Valve Control Solenoid Circuit High (Bank 2)

P0100….Mass or Volume Air Flow Circuit

P0101….Mass or Volume Air Flow Circuit Range/Performance Problem

P0102….Mass or Volume Air Flow Circuit Low Input

P0103….Mass or Volume Air Flow Circuit High Input

P0104….Mass or Volume Air Flow Circuit Intermittent

P0105….Manifold Absolute Pressure/Barometric Pressure Circuit

P0106… Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem

P0107… Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

P0108… Manifold Absolute Pressure/Barometric Pressure Circuit High Input

P0109… Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent

P0110… Intake Air Temperature Circuit

P0111… Intake Air Temperature Circuit Range/Performance Problem

P0112… Intake Air Temperature Circuit Low Input

P0113… Intake Air Temperature Circuit High Input

P0114… Intake Air Temperature Circuit Intermittent

P0115… Engine Coolant Temperature Circuit

P0116… Engine Coolant Temperature Circuit Range/Performance Problem

P0117… Engine Coolant Temperature Circuit Low Input

P0118… Engine Coolant Temperature Circuit High Input

P0119… Engine Coolant Temperature Circuit Intermittent

P0120….Throttle/Pedal Position Sensor/Switch A Circuit

P0121….Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem

P0122….Throttle/Pedal Position Sensor/Switch A Circuit Low Input

P0123….Throttle/Pedal Position Sensor/Switch A Circuit High Input

P0124….Throttle/Pedal Position Sensor/Switch A Circuit Intermittent

P0125….Insufficient Coolant Temperature for Closed Loop Fuel Control

P0126….Insufficient Coolant Temperature for Stable Operation

P0127… Intake Air Temperature Too High

P0128… Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)

P0130… O2 Sensor Circuit (Bank 1 Sensor 1)

P0131… O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)

P0132… O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)

P0133… O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)

P0134… O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)

P0135… O2 Sensor Heater Circuit (Bank 1 Sensor 1)

P0136… O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)

P0137… O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)

P0138… O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)

P0139… O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)

P0140… 02 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)

P0141… 02 Sensor Heater Circuit (Bank 1 Sensor 2)

P0142… 02 Sensor Circuit Malfunction (Bank 1 Sensor 3)

P0143… O2 Sensor Circuit Low Voltage (Bank 1 Sensor 3)

P0144… O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)

P0145… O2 Sensor Circuit Slow Response (Bank 1 Sensor 3)

P0146… 02 Sensor Circuit No Activity Detected (Bank 1 Sensor 3)

P0147… 02 Sensor Heater Circuit (Bank 1 Sensor 3)

P0148… Fuel Delivery Error

P0149… Fuel Timing Error

P0150… O2 Sensor Circuit (Bank 2 Sensor 1)

P0151… O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)

P0152… O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)

P0153… O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)

P0154… O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)

P0155… O2 Sensor Heater Circuit (Bank 2 Sensor 1)

P0156… O2 Sensor Circuit Malfunction (Bank 2 Sensor 2)

P0157… O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)

P0158… O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)

P0159… O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)

P0160… O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)

P0161… O2 Sensor Heater Circuit (Bank 2 Sensor 2)

P0162… O2 Sensor Circuit Malfunction (Bank 2 Sensor 3)

P0163… O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3)

P0164… O2 Sensor Circuit High Voltage (Bank 2 Sensor 3)

P0165… O2 Sensor Circuit Slow Response (Bank 2 Sensor 3)

P0166… O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 3)

P0167… O2 Sensor Heater Circuit (Bank 2 Sensor 3)

P0168… Fuel Temperature Too High

P0169… Incorrect Fuel Composition

P0170… Fuel Trim (Bank 1)

P0171… System too Lean (Bank 1)

P0172… System too Rich (Bank 1)

P0173… Fuel Trim Malfunction (Bank 2)

P0174… System too Lean (Bank 2)

P0175… System too Rich (Bank 2)

P0176… Fuel Composition Sensor Circuit

P0177… Fuel Composition Sensor Circuit Range/Performance

P0178… Fuel Composition Sensor Circuit Low Input

P0179… Fuel Composition Sensor Circuit High Input

P0180… Fuel Temperature Sensor A Circuit

P0181… Fuel Temperature Sensor A Circuit Range/Performance

P0182… Fuel Temperature Sensor A Circuit Low Input

P0183… Fuel Temperature Sensor A Circuit High Input

P0184… Fuel Temperature Sensor A Circuit Intermittent

P0185… Fuel Temperature Sensor B Circuit

P0186… Fuel Temperature Sensor B Circuit Range/Performance

P0187… Fuel Temperature Sensor B Circuit Low Input

P0188… Fuel Temperature Sensor B Circuit High Input

P0189… Fuel Temperature Sensor B Circuit Intermittent

P0190… Fuel Rail Pressure Sensor Circuit

P0191… Fuel Rail Pressure Sensor Circuit Range/Performance

P0192… Fuel Rail Pressure Sensor Circuit Low In put

P0193… Fuel Rail Pressure Sensor Circuit High Input

P0194… Fuel Rail Pressure Sensor Circuit Intermittent

P0195… Engine Oil Temperature Sensor

P0196… Engine Oil Temperature Sensor Range/Performance

P0197… Engine Oil Temperature Sensor Low

P0198… Engine Oil Temperature Sensor High

P0199… Engine Oil Temperature Sensor Intermittent

P0200… Injector Circuit

P0201….Injector Circuit – Cylinder 1

P0202….Injector Circuit – Cylinder 2

P0203….Injector Circuit – Cylinder 3

P0204….Injector Circuit – Cylinder 4

P0205….Injector Circuit – Cylinder 5

P0206….Injector Circuit – Cylinder 6

P0207….Injector Circuit – Cylinder 7

P0208….Injector Circuit – Cylinder 8

P0209….Injector Circuit – Cylinder 9

P0210….Injector Circuit – Cylinder 1

P0211….Injector Circuit – Cylinder 11

P0212….Injector Circuit – Cylinder 12

P0213….Cold Start Injector 1

P0214….Cold Start Injector 2

P0215….Engine Shutoff Solenoid

P0216… Injector/Injection Timing Control Circuit

P0217… Engine Coolant Over Temperature Condition

P0218… Transmission Fluid Over Temperature Condition

P0219… Engine Over Speed Condition

P0220….Throttle/Pedal Position Sensor/Switch ‘B’ Circuit

P0221….Throttle/Pedal Position Sensor/Switch ‘B’ Circuit Range/Performance Problem

P0222….Throttle/Pedal Position Sensor/Switch ‘B’ Circuit Low Input

P0223….Throttle/Pedal Position Sensor/Switch ‘B’ Circuit High Input

P0224….Throttle/Pedal Position Sensor/Switch ‘B’ Circuit Intermittent

P0225….Throttle/Pedal Position Sensor/Switch ‘C’ Circuit

P0226….Throttle/Pedal Position Sensor/Switch ‘C’ Circuit Range/Performance Problem

P0227….Throttle/Pedal Position Sensor/Switch ‘C’ Circuit Low Input

P0228….Throttle/Pedal Position Sensor/Switch ‘C’ Circuit High Input

P0229….Throttle/Pedal Position Sensor/Switch ‘C’ Circuit Intermittent

P0230… Fuel Pump Primary Circuit

P0231… Fuel Pump Secondary Circuit Low

P0232… Fuel Pump Secondary Circuit High

P0233… Fuel Pump Secondary Circuit Intermittent

P0234… Turbo/Super Charger Overboost Condition

P0235… Turbo/Super Charger Boost Sensor ‘A’ Circuit

P0236… Turbo/Super Charger Boost Sensor ‘A’ Circuit Range/Performance

P0237… Turbo/Super Charger Boost Sensor ‘A’ Circuit Low

P0238… Turbo/Super Charger Boost Sensor ‘A’ Circuit High

P0239… Turbo/Super Charger Boost Sensor ‘B’ Circuit

P0240… Turbo/Super Charger Boost Sensor ‘B’ Circuit Range/Performance

P0241… Turbo/Super Charger Boost Sensor ‘B’ Circuit Low

P0242… Turbo/Super Charger Boost Sensor ‘B’ Circuit High

P0243… Turbo/Super Charger Wastegate Solenoid ‘A’

P0244… Turbo/Super Charger Wastegate Solenoid ‘A’ Range/Performance

P0245… Turbo/Super Charger Wastegate Solenoid ‘A’ Low

P0246… Turbo/Super Charger Wastegate Solenoid ‘A’ High

P0247… Turbo/Super Charger Wastegate Solenoid ‘B’

P0248… Turbo/Super Charger Wastegate Solenoid ‘B’ Range/Performance

P0249… Turbo/Super Charger Wastegate Solenoid ‘B’ Low

P0250… Turbo/Super Charger Wastegate Solenoid ‘B’ High

P0251… Injection Pump Fuel Metering Control ‘A’ (Cam/rotor/Injector)

P0252… Injection Pump Fuel Metering Control ‘A’ Range/Performance (Cam/Rotor/Injector)

P0253… Injection Pump Fuel Metering Control ‘A’ Low (Cam/Rotor/Injector)

P0254… Injection Pump Fuel Metering Control ‘A’ High (Cam/Rotor/Injector)

P0255… Injection Pump Fuel Metering Control ‘A’ Intermittent (Cam/Rotor/Injector)

P0256… Injection Pump Fuel Metering Control ‘B’ (Cam/Rotor/Injector)

P0257… Injection Pump Fuel Metering Control ‘B’ Range/Performance (Cam/Rotor/Injector)

P0258… Injection Pump Fuel Metering Control ‘B’ Low (Cam/Rotor/Injector)

P0259… Injection Pump Fuel Metering Control ‘B’ High (Cam/Rotor/Injector)

P0260… Injection Pump Fuel Metering Control ‘B’ Intermittent (Cam/Rotor/Injector)

P0261… Cylinder 1 Injector Circuit Low

P0262… Cylinder 1 Injector Circuit High

P0263… Cylinder 1 Contribution/Balance

P0264… Cylinder 2 Injector Circuit Low

P0265… Cylinder 2 Injector Circuit High

P0266… Cylinder 2 Contribution/Balance

P0267… Cylinder 3 Injector Circuit Low

P0268… Cylinder 3 Injector Circuit High

P0269….Cylinder 4……. Contribution/Balance

P0270… Cylinder 4 Injector Circuit Low

P0271… Cylinder 4 Injector Circuit High

P0272… Cylinder 4 Contribution/Balance

P0273… Cylinder 5 Injector Circuit Low

P0274… Cylinder 5 Injector Circuit High

P0275… Cylinder 5 Contribution/Balance

P0276….Cylinder 6…… Injector Circuit Low

P0277….Cylinder 6…… Injector Circuit High

P0278… Cylinder 6 Contribution/Balance

P0279… Cylinder 7 Injector Circuit Low

P0280… Cylinder 7 Injector Circuit High

P0281… Cylinder 7 Contribution/Balance

P0282… Cylinder 8 Injector Circuit Low

P0283… Cylinder 8 Injector Circuit High

P0284… Cylinder 8 Contribution/Balance

P0285… Cylinder 9 Injector Circuit Low

P0286… Cylinder 9 Injector Circuit High

P0287… Cylinder 9 Contribution/Balance

P0288….Cylinder 10……. Injector Circuit Low

P0289….Cylinder 10……. Injector Circuit High

P0290….Cylinder 10……. Contribution/Balance

P0291… Cylinder 11 Injector Circuit Low

P0292… Cylinder 11 Injector Circuit High

P0293… Cylinder 11 Contribution/Balance

P0294… Cylinder 12 Injector Circuit Low

P0295… Cylinder 12 Injector Circuit High

P0296… Cylinder 12 Contribution/Balance

P0298… Engine Oil Over Temperature

P0300… Random/Multiple Cylinder Misfire Detected

P0301… Cylinder 1 Misfire Detected

P0302… Cylinder 2 Misfire Detected

P0303… Cylinder 3 Misfire Detected

P0304… Cylinder 4 Misfire Detected

P0305… Cylinder 5 Misfire Detected

P0306… Cylinder 6 Misfire Detected

P0307… Cylinder 7 Misfire Detected

P0308… Cylinder 8 Misfire Detected

P0309… Cylinder 9 Misfire Detected

P0310….Cylinder 10……. Misfire Detected

P0311… Cylinder 11 Misfire Detected

P0312… Cylinder 12 Misfire Detected

P0313… Misfire Detected with Low Fuel

P0314… Single Cylinder Misfire (Cylinder not Specified)

P0320… Ignition/Distributor Engine Speed Input Circuit

P0321… Ignition/Distributor Engine Speed Input Circuit Range/Performance

P0322… Ignition/Distributor Engine Speed Input Circuit No Signal

P0323… Ignition/Distributor Engine Speed Input Circuit Intermittent

P0324… Knock Control System Error

P0325… Knock Sensor 1 Circuit (Bank 1 or Single Sensor)

P0326… Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor)

P0327… Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)

P0328… Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)

P0329… Knock Sensor 1 Circuit Input Intermittent (Bank 1 or Single Sensor)

P0330… Knock Sensor 2 Circuit (Bank 2)

P0331… Knock Sensor 2 Circuit Range/Performance (Bank 2)

P0332… Knock Sensor 2 Circuit Low Input (Bank 2)

P0333… Knock Sensor 2 Circuit High Input (Bank 2)

P0334… Knock Sensor 2 Circuit Input Intermittent (Bank 2)

P0335… Crankshaft Position Sensor A Circuit

P0336… Crankshaft Position Sensor A Circuit Range/Performance

P0337… Crankshaft Position Sensor A Circuit Low Input

P0338… Crankshaft Position Sensor A Circuit High Input

P0339… Crankshaft Position Sensor A Circuit Intermittent

P0340….Camshaft Position Sensor ‘A’ Circuit (Bank 1 or Single Sensor)

P0341….Camshaft Position Sensor ‘A’ Circuit Range/Performance (Bank 1 or Single Sensor)

P0342….Camshaft Position Sensor ‘A’ Circuit Low Input (Bank 1 or Single Sensor)

P0343… Camshaft Position Sensor ‘A’ Circuit High Input (Bank 1 or Single Sensor)

P0344… Camshaft Position Sensor ‘A’ Circuit Intermittent (Bank 1 or Single Sensor)

P0345… Camshaft Position Sensor ‘A’ Circuit (Bank 2)

P0346… Camshaft Position Sensor ‘A’ Circuit Range/Performance (Bank 2)

P0347… Camshaft Position Sensor ‘A’ Circuit Low Input (Bank 2)

P0348… Camshaft Position Sensor ‘A’ Circuit High Input (Bank 2)

P0349… Camshaft Position Sensor ‘A’ Circuit Intermittent (Bank 2)

P0350… Ignition Coil Primary/Secondary Circuit

P0351… Ignition Coil ‘A’ Primary/Secondary Circuit

P0352… Ignition Coil ‘B’ Primary/Secondary Circuit

P0353… Ignition Coil ‘C’ Primary/Secondary Circuit

P0354… Ignition Coil ‘D’ Primary/Secondary Circuit

P0355… Ignition Coil ‘F’ Primary/Secondary Circuit

P0356… Ignition Coil ‘F’ Primary/Secondary Circuit

P0357… Ignition Coil ‘G’ Primary/Secondary Circuit

P0358… Ignition Coil ‘H’ Primary/Secondary Circuit

P0359… Ignition Coil ‘I’ Primary/Secondary Circuit

P0360… Ignition Coil ‘J’ Primary/Secondary Circuit

P0361… Ignition Coil ‘K Primary/Secondary Circuit

P0362… Ignition Coil ‘L’ Primary/Secondary Circuit

P0365… Camshaft Position Sensor ‘B’ Circuit (Bank 1)

P0366… Camshaft Position Sensor ‘B’ Circuit Range/Performance (Bank 1)

P0367… Camshaft Position Sensor ‘B’ Circuit Low Input (Bank 1)

P0368… Camshaft Position Sensor ‘B’ Circuit High Input (Bank 1)

P0369… Camshaft Position Sensor ‘B’ Circuit Intermittent (Bank 1)

P0370… Timing Reference High Resolution Signal ‘A’

P0371… Timing Reference High Resolution Signal ‘A’ Too Many Pulses

P0372… Timing Reference High Resolution Signal ‘A’ Too Few Pulses

P0373… Timing Reference High Resolution Signal ‘A’ Intermittent/Erratic Pulses

P0374… Timing Reference High Resolution Signal ‘A’ No Pulse

P0375… Timing Reference High Resolution Signal ‘B’

P0376… Timing Reference High Resolution Signal ‘B’ Too Many Pulses

P0377… Timing Reference High Resolution Signal ‘B’ Too Few Pulses

P0378… Timing Reference High Resolution Signal ‘B’ Intermittent/Erratic Pulses

P0379… Timing Reference High Resolution Signal ‘B’ No Pulses

P0380… Glow Plug/Heater Circuit ‘A’

P0381… Glow Plug/Heater Indicator Circuit

P0382… Glow Plug/Heater Circuit ‘B’

P0385… Crankshaft Position Sensor ‘B’ Circuit

P0386… Crankshaft Position Sensor ‘B’ Circuit Range/Performance

P0387… Crankshaft Position Sensor ‘B’ Circuit Low Input

P0388… Crankshaft Position Sensor ‘B’ Circuit High Input

P0389… Crankshaft Position Sensor ‘B’ Circuit Intermittent

P0390… camshaft Position Sensor ‘B’ Circuit

P0391… Camshaft Position Sensor ‘B’ circuit Range/Performance (Bank 2)

P0392… Camshaft Position Sensor ‘B’ Circuit Low Input (Bank 2)

P0393… Camshaft Position Sensor ‘B’ Circuit High Input (Bank 2)

P0394… Camshaft Position Sensor ‘B’ Circuit Intermittent (Bank 2)

P0400… Exhaust Gas Recirculation Flow

P0401… Exhaust Gas Recirculation Flow Insufficient Detected

P0402… Exhaust Gas Recirculation Flow Excessive Detected

P0403… Exhaust Gas Recirculation Control Circuit

P0404… Exhaust Gas Recirculation Control Circuit Range/Performance

P0405… Exhaust Gas Recirculation Sensor ‘A’ Circuit Low

P0406… Exhaust Gas Recirculation Sensor ‘A’ Circuit High

P0407… Exhaust Gas Recirculation Sensor ‘B’ Circuit Low

P0408… Exhaust Gas Recirculation Sensor ‘B’ Circuit High

P0409… Exhaust Gas Recirculation Sensor ‘A’ Circuit

P0410… Secondary Air Injection System

P0411… Secondary Air Injection System Incorrect Flow Detected

P0412… Secondary Air Injection System Switching Valve ‘A’ Circuit

P0413… Secondary Air Injection System Switching Valve ‘A’ Circuit Open

P0414… Secondary Air Injection System Switching Valve ‘A’ Circuit Shorted

P0415… Secondary Air Injection System Switching Valve ‘B’ Circuit

P0416… secondary Air Injection System Switching Valve ‘B’ Circuit Open

P0417… secondary Air Injection System Switching Valve ‘B’ Circuit Shorted

P0416… Secondary Air Injection System Relay ‘A’ Circuit

P0419… Secondary Air injection System Relay ‘B’ Circuit

P0420… Catalyst System Efficiency Below Threshold (Bank 1)

P0421… Warm Up Catalyst Efficiency Below Threshold (Bank 1)

P0422….Main Catalyst Efficiency Below Threshold (Bank 1)

P0423….Heated Catalyst Efficiency Below Threshold (Bank 1)

P0424… Heated Catalyst Temperature Below Threshold (Bank 1)

P0425… Catalyst Temperature Sensor (Bank 1)

P0426… Catalyst Temperature Sensor Range/Performance (Bank 1)

P0427… Catalyst Temperature Sensor Low Input (Bank 1)

P0428… Catalyst Temperature Sensor High Input (Bank 1)

P0429… Catalyst Heater Control Circuit (Bank 1)

P0430… Catalyst System Efficiency Below Threshold (Bank 2)

P0431… Warm Up Catalyst Efficiency Below Threshold (Bank 2)

P0432….Main Catalyst Efficiency Below Threshold (Bank 2)

P0433….Heated Catalyst Efficiency Below Threshold (Bank 2)

P0434… Heated Catalyst Temperature Below Threshold (Bank 2)

P0435… Catalyst Temperature Sensor (Bank 2)

P0436… Catalyst Temperature Sensor Range/Performance (Bank 2)

P0437… Catalyst Temperature Sensor Low Input (Bank 2)

P0438… Catalyst Temperature Sensor High Input (Bank 2)

P0439… Catalyst Heater Control Circuit (Bank 2)

P0440… Evaporative Emission Control System

P0441… Evaporative Emission Control System Incorrect Purge Flow

P0442… Evaporative Emission Control System Leak Detected (small leak)

P0443… Evaporative Emission Control System Purge Control Valve Circuit

P0444… Evaporative Emission Control System Purge Control Valve Circuit Open

P0445… Evaporative Emission Control System Purge Control Valve Circuit Shorted

P0446… Evaporative Emission Control System Vent Control Circuit

P0447… Evaporative Emission Control System Vent Control Circuit Open

P0448… Evaporative Emission Control System Vent Control Circuit Shorted

P0449… Evaporative Emission Control System Vent Valve/Solenoid Circuit

P0450… Evaporative Emission Control System Pressure Sensor

P0451… Evaporative Emission Control System Pressure Sensor Range/Performance

P0452… Evaporative Emission Control System Pressure Sensor Low Input

P0453… Evaporative Emission Control System Pressure Sensor High input

P0454… Evaporative Emission Control System Pressure Sensor Intermittent

P0455… Evaporative Emission Control System Leak Detected (gross leak)

P0456… Evaporative Emission Control System Leak Detected (very small leak)

P0457… Evaporative Emission Control System Leak Detected (fuel cap loose/off)

P0460… Fuel Level Sensor Circuit

P0461… Fuel Level Sensor Circuit Range/Performance

P0462… Fuel Level Sensor Circuit Low Input

P0463… Fuel Level Sensor Circuit High Input

P0464… Fuel Level Sensor Circuit Intermittent

P0465….EVAP Purge Flow Sensor Circuit

P0466….EVAP Purge Flow Sensor Circuit Range/Performance

P0467….EVAP Purge Flow Sensor Circuit Low Input

P0468….EVAP Purge Flow Sensor Circuit High Input

P0469….EVAP Purge Flow Sensor Circuit Intermittent

P0470. Exhaust Pressure Sensor

P0471… Exhaust Pressure Sensor Range/Performance

P0472… Exhaust Pressure Sensor Low

P0473… Exhaust Pressure Sensor High

P0474… Exhaust Pressure Sensor Intermittent

P0475… Exhaust Pressure Control Valve

P0476… Exhaust Pressure Control Valve Range/Performance

P0477… Exhaust Pressure Control Valve Low

P0478… Exhaust Pressure Control Valve High

P0479… Exhaust Pressure Control Valve Intermittent

P0480… Cooling Fan 1 Control Circuit

P0481… Cooling Fan 2 Control Circuit

P0482… Cooling Fan 3 Control Circuit

P0483… Cooling Fan Rationality Check

P0484… Cooling Fan Circuit Over Current

P0485… Cooling Fan Power/Ground Circuit

P0486… Exhaust Gas Recirculation Sensor ‘B’ Circuit

P0487… Exhaust Gas Recirculation Throttle Position Control Circuit

P0488… Exhaust Gas Recirculation Throttle Position Control Range/Performance

P0491… Secondary Air Injection System (Bank 1)

P0492… Secondary Air Injection System (Bank

P0500… Vehicle Speed Sensor

P0501… Vehicle Speed Sensor Range/Performance

P0502… Vehicle Speed Sensor Circuit Low Input

P0503… Vehicle Speed Sensor Intermittent/Erratic/High

P0505….Idle Control System

P0506….Idle Control System RPM Lower Than Expected

P0507….Idle Control System RPM Higher Than Expected

P0508….Idle Control System Circuit Low

P0509… IdIe Control System Circuit High

P0510… Closed Throttle Position Switch

P0512… Starter Request Circuit

P0513… Incorrect Immobilizer Key

P0515… Battery Temperature Sensor Circuit

P0516… Battery Temperature Sensor Circuit Low

P0517… Battery Temperature Sensor Circuit High

P0520… Engine Oil Pressure Sensor/Switch Circuit

P0521… Engine Oil Pressure Sensor/Switch Range/Performance

P0522… Engine Oil Pressure Sensor/Switch Low Voltage

P0523… Engine Oil Pressure Sensor/Switch High Voltage

P0524… Engine Oil Pressure Too Low

P0530.. A/C Refrigerant Pressure Sensor Circuit

P0531.. A/C Refrigerant Pressure Sensor Circuit Range/Performance

P0532.. A/C Refrigerant Pressure Sensor Circuit Low Input

P0533.. A/C Refrigerant Pressure Sensor Circuit High Input

P0534.. Air Conditioner Refrigerant Charge Loss

P0540… Intake Air Heater Circuit

P0541… Intake Air Heater Circuit Low

P0542… Intake Air Heater Circuit High

P0544… Exhaust Gas Temperature Sensor Circuit (Bank 1)

P0545… Exhaust Gas Temperature Sensor Circuit Low (Bank 1)

P0546… Exhaust Gas Temperature Sensor Circuit High (Bank 1)

P0547… Exhaust Gas Temperature Sensor Circuit (Bank 2)

P0548… Exhaust Gas Temperature Sensor Circuit Low (Bank 2)

P0549… Exhaust Gas Temperature Sensor Circuit High (Bank 2)

P0550… Power Steering Pressure Sensor Circuit

P0551… Power Steering Pressure Sensor Circuit Range/Performance

P0552… Power Steering Pressure Sensor Circuit Low Input

P0553… Power Steering Pressure Sensor Circuit High Input

P0554… Power Steering Pressure Sensor Circuit Intermittent

P0560… System Voltage

P0561… System Voltage Unstable

P0562… System Voltage Low

P0563… System Voltage High

P0564… Cruise Control Multi-Function Input Signal

P0565… Cruise Control On Signal

P0566… Cruise Control Off Signal

P0567… Cruise Control Resume Signal

P0568… Cruise Control Set Signal

P0569… Cruise Control Coast Signal

P0570… Cruise Control Accel Signal

P0571….Cruise Control/Brake Switch A Circuit

P0572….Cruise Control/Brake Switch A Circuit Low

P0573….Cruise Control/Brake Switch A Circuit High

P0574. Cruise Control System – Vehicle Speed Too High

P0575… Cruise Control Input Circuit

P0576… Cruise Control Input Circuit Low

P0577… Cruise Control input Circuit High

P0600….Serial Communication Link

P0601… Internal Control Module Memory Check Sum Error

P0602… Control Module Programming Error

P0603… Internal Control Module Keep Alive Memory (KAM) Error

P0604… Internal Control Module Random Access Memory (RAM) Error

P0605… Internal Control Module Read Only Memory (ROM) Error

P0606… ECM/PCM Processor

P0607… Control Module Performance

P0608… Control Module VSS Output ‘A’

P0609… Control Module VSS Output ‘B’

P0610… Control Module Vehicle Options Error

P0615… Starter Relay Circuit

P0616… Starter Relay Circuit Low

P0617… Starter Relay Circuit High

P0618… Alternative Fuel Control Module KAM Error

P0619… Alternative Fuel Control Module RAM/ROM Error

P0620… Generator Control Circuit

P0621… Generator Lamp ‘L’ Terminal Control Circuit

P0622… Generator Field ‘F’ Terminal Control Circuit

P0623… Generator Lamp Control Circuit

P0624… Fuel Cap Lamp Control Circuit

P0630… VIN Not Programmed or Mismatch – ECM/PCM

P0631… VIN Not Programmed or Mismatch – TCM

P0635… Power Steering Control Circuit

P0836… Power Steering Control Circuit Low

P0637… Power Steering Control Circuit High

P0638… Throttle Actuator Control Range/Performance (Bank 1)

P0639… Throttle Actuator Control Range/Performance (Bank 2)

P0640… Intake Air Heater Control Circuit

P0645.. A/C Clutch Relay Control Circuit

P0646.. A/C Clutch Relay Control Circuit Low

P0647.. A/C Clutch Relay Control Circuit High

P0648… Immobilizer Lamp Control Circuit

P0649… Speed Control Lamp Control Circuit

P0650… Malfunction Indicator Lamp (ML) Control Circuit

P0654… Engine RPM Output Circuit

P0655… Engine Hot Lamp Output Control Circuit

P0656… Fuel Level Output Circuit

P0660… Intake Manifold Tuning Valve Control Circuit (Bank 1)

P0661… Intake Manifold Tuning Valve Control Circuit Low (Bank 1)

P0662… Intake Manifold Tuning Valve Control Circuit High (Bank 1)

P0663… Intake Manifold Tuning Valve Control Circuit (Bank 2)

P0664… Intake Manifold Tuning Valve Control Circuit Low (Bank 2)

P0665… Intake Manifold Tuning Valve Control Circuit High (Bank 2)

P0700… Transmission Control System (MIL Request)

P0701… Transmission Control System Range/Performance

P0702… Transmission Control System Electrical

P0703… Torque Converter/Brake Switch B Circuit

P0704… Clutch Switch In put Circuit Malfunction

P0705… Transmission Range Sensor Circuit Malfunction (PRNDL Input)

P0706… Transmission Range Sensor Circuit Range/Performance

P0707… Transmission Range Sensor Circuit Low Input

P0708… Transmission Range Sensor Circuit High Input

P0709… Transmission Range Sensor Circuit intermittent

P0710… Transmission Fluid Temperature Sensor Circuit

P0711… Transmission Fluid Temperature Sensor Circuit Range/Performance

P0712… Transmission Fluid Temperature Sensor Circuit Low Input

P0713… Transmission Fluid Temperature Sensor Circuit High Input

P0714… Transmission Fluid Temperature Sensor Circuit Intermittent

P0715… Input/Turbine Speed Sensor Circuit

P0716… Input/Turbine Speed Sensor Circuit Range/Performance

P0717… Input/Turbine Speed Sensor Circuit No Signal

P0718… Input/Turbine Speed Sensor Circuit Intermittent

P0719… Torque Converter/Brake Switch B Circuit Low

P0720… Output Speed Sensor Circuit

P0721… Output Speed Sensor Circuit Range/Performance

P0722… Output Speed Sensor Circuit No Signal

P0723… Output Speed Sensor Circuit Intermittent

P0724… Torque Converter/Brake Switch B Circuit High

P0725… Engine Speed Input Circuit

P0726… Engine Speed Input Circuit Range/Performance

P0727… Engine Speed Input Circuit No Signal

P0728… Engine Speed Input Circuit Intermittent

P0730… Incorrect Gear Ratio

P0731….Gear 1 Incorrect Ratio

P0732….Gear 2 Incorrect Ratio

P0733….Gear 3 Incorrect Ratio

P0734….Gear 4 Incorrect Ratio

P0735….Gear 5 Incorrect Ratio

P0736….Reverse Incorrect Ratio

P0737… TCM Engine Speed Output Circuit

P0739… TCM Engine Speed Output Circuit Low

P0739… TCM Engine Speed Output Circuit High

P0740… Torque Converter Clutch Circuit

P0741… Torque Converter Clutch Circuit Performance or Stuck Off

P0742… Torque Converter Clutch Circuit Stuck On

P0743… Torque Converter Clutch Circuit Electrical

P0744… Torque Converter Clutch Circuit Intermittent

P0745… Pressure Control Solenoid ‘A’

P0746… Pressure Control Solenoid ‘A’ Performance or Stuck Off

P0747… Pressure Control Solenoid ‘A’ Stuck On

P0748… Pressure Control Solenoid ‘A’ Electrical

P0749… Pressure Control Solenoid ‘A’ Intermittent

P0750… Shift Solenoid ‘A’

P0751… Shift Solenoid ‘A’ Performance or Stuck Off

P0752… Shift Solenoid ‘A’ Stuck On

P0753… Shift Solenoid ‘A’ Electrical

P0754… Shift Solenoid ‘A’ Intermittent

P0765… Shift Solenoid ‘B’

P0756… Shift Solenoid ‘B’ Performance or Stuck Off

P0757… Shift Solenoid ‘B’ Stuck On

P0758… Shift Solenoid ‘B’ Electrical

P0759… Shift Solenoid ‘B’ Intermittent

P0760… Shift Solenoid ‘C’

P0761… Shift Solenoid ‘C’ Performance or Stuck Off

P0762… Shift Solenoid ‘C’ Stuck On

P0763… Shift Solenoid ‘C’ Electrical

P0764… Shift Solenoid ‘C’ Intermittent

P0765… Shift Solenoid ‘C’

P0766… Shift Solenoid ‘D’ Performance or Stuck Off

P0767… Shift Solenoid ‘D’ Stuck On

P0768… Shift Solenoid ‘D’ Electrical

P0769… Shift Solenoid ‘D’ Intermittent

P0770… Shift Solenoid ‘E’

P0771… Shift Solenoid ‘E’ Performance or Stuck Off

P0772… Shift Solenoid ‘E’ Stuck On

P0773… Shift Solenoid ‘E’ Electrical

P0774… Shift Solenoid ‘E’ Intermittent

P0775… Pressure Control Solenoid ‘B’

P0776… Pressure Control Solenoid ‘B’ Performance or Stuck Off

P0777… Pressure Control Solenoid ‘B’ Stuck On

P0778… Pressure Control Solenoid ‘B’ Electrical

P0779… Pressure Control Solenoid ‘B’ Intermittent

P0780… Shift

P0781….1-2 Shift

P0782….2-3 Shift

P0783….3-4 Shift

P0784….4-5 Shift

P0785… Shift/Timing Solenoid

P0786… Shift/Timing Solenoid Range/Performance

P0787… Shift/Timing Solenoid Low

P0788… Shift/Timing Solenoid High

P0789… Shift/Timing Solenoid Intermittent

P0790… Normal/Performance Switch Circuit

P0791… Intermediate Shaft Speed Sensor Circuit

P0792… Intermediate Shaft Speed Sensor Circuit Range/Performance

P0793… Intermediate Shaft Speed Sensor Circuit No Signal

P0794… Intermediate Shaft Speed Sensor Circuit Intermittent

P0795… Pressure Control Solenoid ‘C’

P0796… Pressure Control Solenoid ‘C’ Performance or Stuck off

P0797… Pressure Control Solenoid ‘C’ Stuck On

P0798… Pressure Control Solenoid ‘C’ Electrical

P0799… Pressure Control Solenoid ‘C’ Intermittent

P0801… Reverse Inhibit Control Circuit

P0803….1-4 Upshift (Skip Shift) Solenoid Control Circuit

P0804….1-4 Upshift (Skip Shift) Lamp Control Circuit

P0805….Clutch Position Sensor Circuit

P0806… Clutch Position Sensor Circuit Range/Performance

P0807… Clutch Position Sensor Circuit Low

P0808… Clutch Position Sensor Circuit High

P0809… Clutch Position Sensor Circuit Intermittent

P0810… Clutch Position Control Error

P0811… Excessive Clutch Slippage

P0812… Reverse Input Circuit

P0813… Reverse Output Circuit

P0814… Transmission Range Display Circuit

P0815… Upshift Switch Circuit

P0816… Downshift Switch Circuit

P0817… Starter Disable Circuit

P0818… Driveline Disconnect Switch Input Circuit

P0820….Gear Lever X-Y Position Sensor Circuit

P0821….Gear Lever X Position Circuit

P0822….Gear Lever Y Position Circuit

P0823….Gear Lever X Position Circuit Intermittent

P0824….Gear Lever Y Position Circuit Intermittent

P0825….Gear Lever Push-Pull Switch (Shift Anticipate)

P0830… Clutch Pedal Switch ‘A’ Circuit

P0831… Clutch Pedal Switch ‘A’ Circuit Low

P0832… Clutch Pedal Switch ‘A’ Circuit High

P0833… Clutch Pedal Switch ‘B’ Circuit

P0834… Clutch Pedal Switch ‘B’ Circuit Low

P0835… Clutch Pedal Switch ‘B’ Circuit High

P0836… Four Wheel Drive (4WD) Switch Circuit

P0837… Four Wheel Drive (4WD) Switch Circuit Range/Performance

P0838… Four Wheel Drive (4WD) Switch Circuit Low

P0839… Four Wheel Drive (4WD) Switch Circuit High

P0840….Transmission Fluid Pressure Sensor/Switch ‘A’ Circuit

P0841….Transmission Fluid Pressure Sensor/Switch ‘A’ Circuit Range/Performance

P0842….Transmission Fluid Pressure Sensor/Switch ‘A’ Circuit Low

P0843….Transmission Fluid Pressure Sensor/Switch ‘A’ Circuit High

P0844….Transmission Fluid Pressure Sensor/Switch ‘A’ Circuit Intermittent

P0845….Transmission Fluid Pressure Sensor/Switch ‘B’ Circuit

P0846….Transmission Fluid Pressure Sensor/Switch ‘B’ Circuit Range/Performance

P0847….Transmission Fluid Pressure Sensor/Switch ‘B’ Circuit Low

P0848….Transmission Fluid Pressure Sensor/Switch ‘B’ Circuit High

P0849….Transmission Fluid Pressure Sensor/Switch ‘B’ Circuit Intermittent

P0850… Park/Neutral Switch Input Circuit

P0851… Park/Neutral Switch Input Circuit Low

P0852… Park/Neutral Switch Input Circuit High

P0853… Drive Switch Input Circuit

P0854… Drive Switch Input Circuit Low

P0855… Drive Switch Input Circuit High

P0856… Traction Control Input Signal

P0857… Traction Control Input Signal Range/Performance

P0858… Traction Control Input Signal Low

P0859… Traction Control Input Signal High

P0860….Gear Shift Module Communication Circuit

P0861….Gear Shift Module Communication Circuit Low

P0862….Gear Shift Module Communication Circuit High

P0863….TCM Communication Circuit

P0864… TCM Communication Circuit Range/Performance

P0865… TCM Communication Circuit Low

P0866… TCM Communication Circuit High

P0867… Transmission Fluid Pressure

P0868… Transmission Fluid Pressure Low

P0869… Transmission Fluid Pressure High

P0870….Transmission Fluid Pressure Sensor/Switch “C” circuit

P0871….Transmission Fluid Pressure Sensor/Switch “C” Circuit Range/Performance

P0872….Transmission Fluid Pressure Sensor/Switch “C” circuit Low

P0873….Transmission Fluid Pressure Sensor/Switch “C” circuit High

P0874….Transmission Fluid Pressure Sensor/Switch “C” circuit Intermittent

P0875….Transmission Fluid Pressure Sensor/Switch “D” circuit

P0876….Transmission Fluid Pressure Sensor/Switch “D” Circuit Range/Performance

P0877….Transmission Fluid Pressure Sensor/Switch “D” circuit Low

P0878….Transmission Fluid Pressure Sensor/Switch “D” circuit High

P0879….Transmission Fluid Pressure Sensor/Switch “D” circuit Intermittent

P0880… TCM Power Input Signal

P0881… TCM Power Input Signal Range/Performance

P0882… TCM Power Input Signal Low

P0883… TCM Power Input Signal High

P0884… TCM Power Input Signal Intermittent

P0885… TCM Power Relay Control Circuit/Open

P0886… TCM Power Relay Control Circuit Low

P0887… TCM Power Relay Control Circuit High

P0888… TCM Power Relay Sense Circuit

P0889… TCM Power Relay Sense Circuit Range/Performance

P0890… TCM Power Relay Sense Circuit Low

P0891… TCM Power Relay Sense Circuit High

P0892… TCM Power Relay Sense Circuit Intermittent

P0893… Multiple Gears Engaged

P0894… Transmission Component Slipping

P0895… Shift Time Too Short

P0896… Shift Time Too Long

P0897… Transmission Fluid Deteriorated

P0898… Transmission Control System MIL Request Circuit Low

P0899… Transmission Control System MIL Request Circuit High

P0900… Clutch Actuator Circuit/Open

P0901… Clutch Actuator Circuit Range/Performance

P0902… Clutch Actuator Circuit Low

P0903… Clutch Actuator Circuit High

P0904… Gate Select Position Circuit

P0905… Gate Select Position Circuit Range/Performance

P0906… Gate Select Position Circuit Low

P0907… Gate Select Position Circuit High

P0908… Gate Select Position Circuit Intermittent

P0909… Gate Select Control Error

P0910… Gate Select Actuator Circuit/Open

P0911… Gate Select Actuator Circuit Range/Performance

P0912… Gate Select Actuator Circuit Low

P0913… Gate Select Actuator Circuit High

P0914….Gear Shift Position Circuit

P0915….Gear Shift Position Circuit Range/Performance

P0916….Gear Shift Position Circuit Low

P0917….Gear Shift Position Circuit High

P0918….Gear Shift Position Circuit Intermittent

P0919….Gear Shift Position Control Error \

P0920….Gear Shift Forward Actuator Circuit/Open

P0921….Gear Shift Forward Actuator Circuit Range/Performance

P0922….Gear Shift Forward Actuator Circuit Low

P0923….Gear Shift Forward Actuator Circuit High

P0924….Gear Shift Reverse Actuator Circuit/Open

P0925….Gear Shift Reverse Actuator Circuit Range/Performance

P0926….Gear Shift Reverse Actuator Circuit Low

P0927….Gear Shift Reverse Actuator Circuit High

P0928….Gear Shift Lock Solenoid Control Circuit/Open

P0929….Gear Shift Lock Solenoid Control Circuit Range/Performance

P0930….Gear Shift Lock Solenoid Control Circuit Low

P0931….Gear Shift Lock Solenoid Control Circuit High

P0932. Hydraulic Pressure Sensor Circuit

P0933.. Hyd raulic Pressure Sensor Range/Performance

P0934… Hydraulic Pressure Sensor Circuit Low

P0935… Hydraulic Pressure Sensor Circuit High

P0936… Hydraulic Pressure Sensor Circuit Intermittent

P0937… Hydraulic Oil Temperature Sensor Circuit

P0938… Hydraulic Oil Temperature Sensor Range/Performance

P0939… Hydraulic Oil Temperature Sensor Circuit Low

P0940.. Hyd raulic Oil Temperature Sensor Circuit High

P0941… Hydraulic Oil Temperature Sensor Circuit Intermittent

P0942… Hydraulic Pressure Unit

P0943… Hydraulic Pressure Unit Cycling Period Too Short

P0944… Hydraulic Pressure Unit Loss of Pressure

P0945.. Hyd raulic Pump Relay C ircuit/Open

P0946… Hydraulic Pump Relay Circuit Range/Performance

P0947… Hydraulic Pump Relay Circuit Low

P0948… Hydraulic Pump Relay Circuit High

P0949….Auto Shift Manual Adaptive Learning Not Complete

P0950….Auto Shift Manual Control Circuit

P0951….Auto Shift Manual Control Circuit Range/Performance

P0952….Auto Shift Manual Control Circuit Low

P0953….Auto Shift Manual Control Circuit High

P0954….Auto Shift Manual Control Circuit Intermittent

P0955….Auto Shift Manual Mode Circuit

P0956….Auto Shift Manual Mode Circuit Range/Performance

P0957….Auto Shift Manual Mode Circuit Low

P0958….Auto Shift Manual Mode Circuit High

P0959….Auto Shift Manual Mode Circuit Intermittent

P0960… Pressure Control Solenoid “A” Control Circuit/Open

P0961… Pressure Control Solenoid “A” Control Circuit Range/Performance

P0962… Pressure Control Solenoid “A” Control Circuit Low

P0963… Pressure Control Solenoid “A” Control Circuit High

P0964… Pressure Control Solenoid “B” Control Circuit/Open

P0965… Pressure Control Solenoid “B” Control Circuit Range/Performance

P0966… Pressure Control Solenoid “B” Control Circuit Low

P0967… Pressure Control Solenoid “B” Control Circuit High

P0968… Pressure Control Solenoid “C” Control Circuit/Open

P0969… Pressure Control Solenoid “C” Control Circuit Range/Performance

P0970… Pressure Control Solenoid “C” Control Circuit Low

P0971… Pressure Control Solenoid “C” Control Circuit High

P0972… Shift Solenoid “A” Control Circuit Range/Performance

P0973… Shift Solenoid “A” Control Circuit Low

P0974… Shift Solenoid “A” Control Circuit High

P0975… Shift Solenoid “B” Control Circuit Range/Performance

P0976… Shift Solenoid “B” Control Circuit Low

P0977… Shift Solenoid “B” Control Circuit High

P0978… Shift Solenoid “C” Control Circuit Range/Performance

P0979… Shift Solenoid “C” Control Circuit Low

P0980… Shift Solenoid “C” Control Circuit High

P0981… Shift Solenoid “D” Control Circuit Range/Performance

P0982… Shift Solenoid “D” Control Circuit Low

P0983… Shift Solenoid “D” Control Circuit High

P0984… Shift Solenoid “E” Control Circuit Range/Performance

P0985… Shift Solenoid “E” Control Circuit Low

P0986… Shift Solenoid “E” Control Circuit High

P0987….Transmission Fluid Pressure Sensor/Switch “E” Circuit

P0988….Transmission Fluid Pressure Sensor/Switch “E” Circuit Range/Performance

P0989….Transmission Fluid Pressure Sensor/Switch “E” Circuit Low

P0990….Transmission Fluid Pressure Sensor/Switch “E” Circuit High

P0991….Transmission Fluid Pressure Sensor/Switch “E” Circuit Intermittent

P0992….Transmission Fluid Pressure Sensor/Switch “F” Circuit

P0993….Transmission Fluid Pressure Sensor/Switch “F” Circuit Range/Performance

P0994….Transmission Fluid Pressure Sensor/Switch “F” Circuit Low

P0995….Transmission Fluid Pressure Sensor/Switch “F” Circuit High

P0996….Transmission Fluid Pressure Sensor/Switch “F” Circuit Intermittent

P0997… Shift Solenoid “F” Control Circuit Range/Performance

P0998… Shift Solenoid “F” Control Circuit Low

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The post OBD2 Trouble Codes – Generic first appeared on Mark Quitter Racing.

Air Filter

Mark Quitter — Fri, 10 Oct 2025 03:56:29 +0000

The air filter is often an overlooked part. A dirty and clogged air filter can cause more damage than you think. Insufficient flow of air to the intake means that the engine has to work harder. Excessive heat is an engine killer. Also, the air filter allows clean air to enter the intake so the engine can burn a good mixture of air and gasoline. Dirt in the intake can damage engine parts such as cylinder heads and pistons. According to the service manual, the air filter on the 2004-2006 Pontiac GTO should be replaced every 25,000 miles.

On the 2004-2006 Pontiac GTO you have 2 choices:

Replace the factory air filter every 25,000 or less
Upgrade to a Cold Air Intake (CAI) system which has much better filters and lasts much longer than 25,000 miles

K&N Air Filters claim they can go as much as 100,000 miles on the street before service is needed. AEM Brute Force CAI claims they can go 100,000 miles before cleaning is required. Below I have listed some CAI options for the 2004-2006 Pontiac GTO. Visit the websites and decide for yourself which setup will work best for you.

NOTE: 2004 Pontiac GTO has different part numbers than 2005-2006 Pontiac GTO. Choose the correct year when purchasing.

CAI – Cold Air Intake

OTRCAI – Over The Radiator Cold Air Intake

There are also Over The Radiator Cold Air Induction (OTRCAI) available. This style CAI is more expensive but sits over the radiator sucking in fresh cold air, rather than the traditional style which is tucked in behind the driver’s side headlight, which traps more heat. You can get more information on over the radiator cold air intakes by clicking: Bohnman’s Customs OTRCAI for GTO – GTO XAIR

The post Air Filter first appeared on Mark Quitter Racing.

2004-2006 Pontiac GTO Service Manual – Free!

Mark Quitter — Wed, 07 Jun 2023 23:35:57 +0000

Need a service manual for your 2004-2006 Goat? I have it for you in .pdf format! This manual is complete with torque specs, parts breakdown, repairs, service, and everything a mechanic needs to know. This service manual is a GTO owner’s bible. I don’t do a single repair without looking up torque specs, you shouldn’t either. I am offering this to you absolutely for free! I hope you find this useful, and any donations would be much appreciated. Thank you for your support.

DOWNLOAD (.pdf format):
2004-2006 Pontiac GTO Service Manual – Google Drive
2004-2006 Pontiac GTO Service Manual – DropBox

The service manual is available through Google Drive or DropBox. You do not need a Google Drive account to download the file. Simply click the link above and download the file. The download is a .zip file. Just download the file to your computer, extract the files, and enjoy! All the extracted files will be in .pdf format, as well as a few images included in the file.

Update: I added to the service manual jacking diagrams, key programming, parking brake adjustment, and a few other items. File updated on 04/20/21

The post 2004-2006 Pontiac GTO Service Manual – Free! first appeared on Mark Quitter Racing.

2004-2006 GTO Instrument Cluster Programming

Mark Quitter — Tue, 06 Jun 2023 16:21:59 +0000

Turn on the shift light, custom start up logo or message, and more
GTO Dash Cluster Factory GTO Instrument Panel Custom Start Up Logo Choose from start up logo or custom text Shift Light On Turn On The Shift Light Custom Text Add a combination of letters and numbers

ATTENTION 2004-2006 PONTIAC GTO OWNERS!

All 5th Generation owners want to know how to activate the shift light that is built into the tachometer on the dashboard! Read below how you can do this yourself, at home, using nothing more than your Windows-based laptop and a USB to OBD1 cable.

Ever wonder what that little circle is that never lights up at the end of the tachometer? That is the shift light that was disabled from the factory. Want the shift light working on your 2004-2006 Pontiac GTO? You can reprogram the instrument cluster yourself to turn on that shift light and more by downloading the VZ ClusterMod program below. The program will do all of the following:

* Activate Factory Shift light
* Custom shift light activations for all manual and automatic transmissions (choose your RPM)
* Custom startup logo including “Holden”, “HSV”, “Pontiac”, and more
* Custom text when the ignition is turned off
* Turn off Daytime Running Lights light
and more……

Note: You do not need to pull the instrument cluster out of your vehicle. The programming can be done from inside your car, using a laptop computer and an OBD to USB cable.

You now can reprogram the instrument cluster yourself and have that shift light on the dashboard working! The program will also clear the “airbag” fault light that will be activated if you have removed the driver or passenger seats. The airbag light can only be cleared through the OBD plug. Disconnecting the battery will not clear the code. Don’t pull out your instrument cluster and pay the high price of activation and shipping. This service costs as much as $130 online and you have to ship the instrument cluster. Now you are out a lot of money, and have a car that you can’t drive until you get the cluster back!

Below you will find all the instructions to work with the downloaded program. All instructions and documentation are enclosed in the download.

FOLLOW THE INSTRUCTIONS BELOW VERY CAREFULLY:

Purchase a USB to OBD1 16 pin cable. I recommend purchasing a quality product that will ensure a perfect connection between your laptop and the OBD plug in the vehicle. You do not want some kind of error to happen during programming because of an intermittent connection.

The cable can be purchased from OBD Diagnostics, Inc. Phone (310)793-2410 or Click on the link to view the cable and how to purchase: https://aldlcable.com/products/aldlobd2u.asp
Download the VZ Cluster Mod program below. Must have Windows (7,8, or 10) Operating System device. Download the program to somewhere on your device where you would like it to be and easily accessible. YOU DO NOT NEED TO INSTALL THE PROGRAM. Simply placing the folder on your Widows-based machine will work. There is nothing to install on your machine. The program simply uses a combination of MS-DOS and Python drivers to read the dash panel of your vehicle.

DOWNLOAD (Windows 7, 8, or 10 only) .zip format:

VZ ClusterMod – 2004-2006 Pontiac GTO Instrument Cluster Programmer
Un-zip and the VZ ClusterMod folder using WinZip, 7-Zip, or whatever program you use to extract .zip files. ONCE YOU HAVE EXTRACTED THE FILE, DO NOT EXTRACT THE “LIBRARY” FILE IN THE EXTRACTED VZ CLUSTERMOD FOLDER! DO NOT DELETE ANY OF THE FILES IN THE FOLDER!
Read all the documentation enclosed starting with the “READ ME” file. All the instructions you will need are enclosed in the “READ ME” files and “Instructions” folder. Follow the directions carefully. I have used this program several times, and I have never had an issue or problem. I want you all to experience the same.
With the car off, Plug the USB side of your cable into your laptop. Plug the OBD plug end into the OBD port under the dashboard. Open the VZ ClusterMod program on your laptop (VZ ClusterMod for the instrument cluster, VZ AirBag to turn off the Air Bag fault light), turn the ignition key to the ON position, and follow the instructions per the enclosed instructions file.

DOWNLOAD (Windows 7, 8, or 10 only) .zip format:
VZ ClusterMod – 2004-2006 Pontiac GTO Instrument Cluster Programmer

For a complete online list of the instructions and for the origin of the VZ ClusterMod, visit this website: https://1337vending.com/vzclustermod/

The post 2004-2006 GTO Instrument Cluster Programming first appeared on Mark Quitter Racing.

Maintenance Schedule

Mark Quitter — Mon, 05 Jun 2023 06:53:34 +0000

2004-2006 Pontiac GTO Maintenance Schedule

Following a maintenance schedule for your vehicle will not only improve performance but also improve longevity in how long your car will last. Avoid costly repairs by regularly maintaining your vehicle and inspecting and servicing it at the required intervals. A maintenance schedule includes inspection as well as servicing your vehicle to ensure it is operating as safely and efficiently as it should while driving.

The Maintenance Schedule can be found in your vehicle’s owner’s manual and also in the service manual. For your convenience, I have made the following maintenance schedule for you. The maintenance for all 2004-2006 Pontiac GTO’s is the same. The 2004 Pontiac GTO has the LS1 5.7 Litre, and the 2005-2006 Pontiac GTO’s have the LS2 6.0 Litre engine. Both engines require the same maintenance and service.

2004-2006 Pontiac GTO Maintenance Schedule

MAINTENANCE	MILEAGE	SERVICE
Air Filter (factory/stock)	every 25,000	Replace
Automatic Transmission Fluid w/Filter	every 50,000	Replace
Belts (serpentine and a/c)	every 60,000	Replace
Brake Fluid	every 100,000	Inspect and have flushed if needed
Cooling System	every 100,000 (or 5 years)	Service – Flush and replace coolant, replace thermostat.
Differential Fluid	every 50,000	Replace
Manual Transmission Fluid	every 100,000	Replace
Oil Change w/ Filter	every 3,000	Replace
Spark Plugs	every 100,000	Replace
Spark Plug Wires	every 100,000	Inspect and replace if needed

Maintenance To Be Done At Each Oil Change

MAINTENANCE	SERVICE
Brake Fluid	Check levels and inspect for dirty fluid. Top off if needed. Use only DOT-4 brake fluid
Coolant	Check coolant level and top off if needed. Only Use DEXCOOL Antifreeze or water.
Lubricate body components	Lubricate door hinges and door locking assembly mechanism and door strikers with white lithium grease
Tires	Check tire pressure
Power Steering Fluid	Check levels and top off. Only use DEXRON III Automatic Transmission fluid in the power steering fluid reservoir
Windshield Wiper Fluid	Top off fluids
Windshield Wipers	Inspect for cracks or tears. Replace if needed.

Note: For 2005 and 2006 Pontiac GTO with the 6.0 Litre LS2 Engine, add a 1/2 to a maximum of 1 extra (additional) quart of oil to prevent top-end oil starvation.

DOWNLOAD (.pdf format)
2004-2006 Pontiac GTO Maintenance Schedule (taken from the service manual)

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The post Maintenance Schedule first appeared on Mark Quitter Racing.

2004-2006 GTO Drive Belts

Mark Quitter — Fri, 02 Jun 2023 04:48:37 +0000

2004-2006 Pontiac GTO Drive Belts replacement. If it is time to replace the belts on your 5th generation GTO, you came to the right place. The owner’s manual recommends changing the belts every 150,000 miles. I personally think this is way too long. Dayco recommends inspecting your drive belts at 60,000 miles and replacing worn belts at 90,000 miles. Below is an excerpt taken right from the Dayco Belt Training write-up:

“Over the past 25 years, serpentine belts have changed considerably. 25 years ago vehicles had multiple serpentine belts that only had up to 4 points of contact. Today, serpentine belts can have over 10 points of contact, creating very complicated drive systems. These complicated drives offer many more opportunities for issues such as pulley misalignment, resulting in unwanted noise. Today’s belts are also made to last longer than their predecessors of 25 years ago. Years ago, belts were made with a Neoprene rubber compound that lasted 50-80,000 miles before failure or replacement. Today’s serpentine belts are made with an EPDM (Ethylene Propylene Diene Monomer) compound and should be inspected for wear starting at 60,000 miles and worn components should be replaced at 90,000 miles.”

Recommended Belts For 2004-2006 Pontiac GTO

YEAR	DESCRIPTION	PART NUMBER
2004-2006 Pontiac GTO	Dayco Serpentine Belt/Main Drive Belt	5060785
2004-2006 Pontiac GTO	Dayco Air Conditioning Belt	5040430

Follow the below steps to change your vehicles drive belt:

Remove the plastic radiator shroud. Should be 4 push pin plastic body fasteners holding it in place, as well as a metal clip at the center of the shroud, underneath the plastic. Pull gently making sure to not break or crack the plastic shroud or the clip that holds it in place.

Under the hood look for the serpentine belt tensioner, marked with a red arrow below:
You will need a 15mm socket and a breaker bar or long handle ratchet. Place the socket on the bolt head and turn it to the right/clockwise to move the pulley tensioner. With the tensioner turned, this will release the pressure on the belt and you will be able to easily slide the belt off of the pulley. Release the tensioner, and completely remove the belt.

Note: If you are also replacing your air conditioning belt, remove and replace that belt before installing the new drive belt. The same concept applies. Use the 15mm socket on the a/c belt tensioner as shown in the diagram above, and turn clockwise. Release the belt. Install the new A/C Belt first, before installing the drive belt. The air conditioning belt sits behind the drive belt on the harmonic balancer, so it must be installed before installing the drive belt.

Begin installing the new drive belt using the diagram below. Route the belt in a way that the only pulley left for the belt to go on to is the belt tensioner you used to release the old belt.
Install the new belt. Using the 15mm socket, turn the belt tensioner clockwise and slide the new belt over the pulley. You will have to place the socket under the belt, so the belt can slide over the socket and onto the belt tensioner pulley. Release the tensioner and the new belt should be in place and tight.
Reinstall the plastic radiator shroud. Line up the metal clip on the underside of the shroud and gently snap it into place. Install the 4 plastic push pins that hold the radiator shroud in place. Congratulations, you changed your belts!

Note: I hope you found the information contained on this website useful. Many hours of time and research have gone into building this website. Please feel free to donate to Mark Quitter Racing. Donations will be used to pay for website services or for any other practical use per your request which can be filled out on the PayPal donation link. There is no minimum amount, and your contribution is greatly appreciated. Donate here.

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