Along the top of the motor covered by individual coil packs. Careful removal of the coil pack retaining bolts is a must as they are long and thin. You must remove the resonator box from the top of the motor area (Vortec4200) in order to see what you need to see.
How to change the spark plugs
AC Delco Iridium spark plugs.
ac delco spark plugs are type that originally came with 2003 GMC envoy
6
The gap on spark plugs is .042.
Can you tell me how to remove the box covering the spark plugs in a 2002 gmc envoy slt 4.2
Depends on the type of spark plugs. Factory plugs around 70 - 100k depending on the condition of the plugs. I would replace the spark plugs out with some AC Delco iridium plugs they will last you 100k+.
I put NGK iradium pre gapped plugs and they work great.
Remove the spark plug wires from each spark plug. Turn the spark plug out with a 5/8 deep well socket. Reverse the process to install the new spark plugs.
16 spark plugs in s430 mercedes benz year 2002
I would use original equipment ACDelco Iridium spark plugs part number 41-103 for best results.
no one knows