2002 GMC Envoy four wheel drive

2002 GMC ENVOY
89,000 MILES • 6 CYL • 4WD • AUTOMATIC
Avatar
DAN HILL
  • MEMBER
  • 1 POST
I would like to know what to look for, because the four wheel drive will not kick in. all 4x4 on sector switch no working when trying to put in the following. all four wheel, lo 4x4, Hi 4x4. The check engine light came on, but shore if that has anything to do with it.
Dec 13, 2008 at 8:31 AM
Advertisement
Avatar
JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Hi:
Have the computer scanned at a nationally recognized parts store to determine why the light is on. Let me know what you find.

As far as the 4wd, you will need to see if you are getting power to the actuator on the transfercase. If it is, the actuator may need replaced. If no, you need to see if there is power to the switch.

Let me know.

Joe
Dec 20, 2008 at 5:09 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.