How do I change spark plugs on my 2008 GMC Envoy

SOURCE: change sparkplugs

go to mechanic

SOURCE: I am changing the spark plugs on my 2002 GMC

.043. Good luck. Thanks for rating my response and for using FixYa!

Joseph Brown

• 4 Answers
• Posted on Jul 16, 2009

SOURCE: how to change the spark plugs from a 05 gmc envoy

Why? My 2001 GMC has never been changed. The mechanic of our service fleet says it doesn't. I trust a man with decades of experience.

SOURCE: CHANGE SPARK PLUGS

Well first you will want to get the right size spark plug socket , the rigt sized one for your envoy and then next you will want to remove one spark plug wire at a time so you do not cross any of the wires or if you do you will mess up the timing for the envoy now how to remove a spark plug wire, look first at the plug wire and then gentky twist the wire on the end that goes over the spark plug and carefuly pull back but do not break the wire, next with an extention and the socket put the socket over the spark plug and turn the plug counter clock wise until you have removed the plug and then put the new spark plug in and place the spark plug wire back on the spark plug and just repeat the prosses on the rest,agin do them one at a time that is how I change spark plugs and wires and i have been doing it for years.

SOURCE: How do I change the spark plugs in a GMC Envoy

Location of spark plugsThey are located along the top of the motor under coil packs that fire the plugs. You have to remove the resonator box from the top of the motor to gain access.
Each coil pack is secured with two long skinny bolts and must be removed carefully. Then simply lift it off and remove the plug directly underneath it.
Use only AC Delco iridium plugs. 100k mile intervals.