2002 GMC Envoy 4 Wheel Drive

THERRINGTON

MEMBER
2002 GMC ENVOY
6 CYL
4WD
AUTOMATIC
11,540 MILES

Good Morning: My 4 wheel drive lights are not functioning, nor is the 4 wheel drive. I have looked in the owners manual and there is nothing listed regarding same. Is there a fuse involved that I am not aware of, or is this a more serious problem. Any ideas on repair and is it an extensive repair situation?

Thank You.

Tim Herrington

1 Reply

JAMES W.

MECHANIC
2,395 POSTS

There are actually 3 fuses that control your 4WD system. 1- 15A main fuse in the block under the left rear seat. A 10A and 15A in the block under the hood. Sorry I can't give you the fuse #'s, they weren't listed. There is also a module for the 4WD under the left side of the dash. If you have, or have access to, a fax # I can ship you a copy of the wiring diagram. I can download it to this site, but they are so compressed they don't come out very clear.