Questions & Answers for: change spark plug 2003 gmc

how to change spark plugs in an 2003 gmc envoy take to mechanic

...changed the spark plug & coil and the problem still exists What should I do next? Next step is to switch injectors between Cyl #1 and another cylinder. Another check to make is a compression

...change spark plugs and go from there. Changed the spark plugs with the original A/C Delco Irredium plugs and also changed #6 & #3 coil pack. Still runs a little rough at idle but now have a ...

...spark plugs with AC Delco 43-103, other Platinum plugs don't work well with Envoys/Trailblazers. Also, probably time for an 02 sensor change, the one upstream in the engine compartment. These things ...

...change air filter n spark plugs n know my 2003 envoy is shaking n missing i push the gas n i takes long to gain speed is also waisting more gas You should probably go back and make sure you snapped ...

...a GM service technician to change the spark plugs in aq 2003 GMC Envoy inline 6 cyl? For a trained technician this job should take from 1 to 1 - 1/2 hours. Some of the plugs are difficult to get

...spark plugs replaced) on a 2003 GMC Envoy XL (6 cyl). I've owned it for 6.5 years, it is 10 yrs old and I have never had a tuneup. It seems to hesitate a bit when accelerating and I can feel like ...

...spark plugs on 2003 gmc envoy 6 plugs need tp change plugs are they on top and middle of the valve cover The spark plugs are located on the top of the engine, you have to remove the airbox to access ...

...spark plugs on 2003 gmc envoy 4.2lno runs bad First of all, did you use AC Delco Iridium plugs part number 41-103? These are the best plugs for this engine.Second, did you firmly seat the coil pack ...

spark plug misfires, the high voltage goes no where and the coil starts to deteriorate. After prolonged misfire the coil will not make the hi voltage necessary to fire the plug. Replace the coil packs