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2003 GMC Envoy 4 wheel drive

Tiny
GLENNMCQUARTER1
  • MEMBER
  • 2003 GMC ENVOY
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 106,000 MILES
The service 4x4 light comes on. The transmission shop told me that every time they clear the code it comes right back on.

What could be the problem. The 4 wheel and AWD functions do not work
Tuesday, December 2nd, 2008 AT 12:30 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi:
If the 4x4 unit will not engauge, you problem most likely lies with the actuator located on the transfer case. Check it for power when shifting from 2 to 4 wheel drive. If you're getting power, the actuator needs replaced.

Joe
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Tuesday, December 2nd, 2008 AT 5:40 PM

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