Tag: how to change your spark plugs

Spark Plugs

INTRO It has come a time in your maintenance schedule for your 2004-2006 Pontiac GTO to have the spark plugs changed. The service manual recommends changing the spark plugs at 100,000 miles. The maintenance schedule is the same for both the 2004 GTO with the LS1 engine and the 2005 and 2006 GTO with the …READ MORE