2002 GMC Envoy four wheel drive

2002 GMC ENVOY
89,000 MILES • 6 CYL • 4WD • AUTOMATIC
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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 12:31 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
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 9:09 AM
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