2002 Chevrolet Avalanche 1500 Q&A
2002 Chevrolet Avalanche 1500 Question: Can I change my spark plugs?
Change them one at a time. Check the electrode gap before you install the plugs. If you haven't done this kind of work, you may be happier in the end if you have a pro do it. If you want to find a GM specialist, here's a directory link for you: https://repairpal.com/directory?address=98023&car_brand_names=Chevrolet - Superbob
handheld scanner said multiple cyl.misfire,coilpacks on right side would stall running vehicle if disconnected,left side had no change and would not stall vehicle after disconnecting coil packs.
GOT THE MESSAGE REDUCED ENGINE POWER HOW DO i FIX IT