Three problems related to automatic transmission column shift have been reported for the 2002 GMC Envoy. The most recently reported issues are listed below.
Mirrors 'wander' every time vehicle is unlocked, fail to return to settings creating an unreasonable danger to the occupants of this vehicle as well as other vehicles when changing lanes or merging into traffic due to lack of visability of the area behind the vehicle. Transmission failed on a slight incline with parking brake engaged and transfer case locked and in 4wd and transmission in park - vehicle began rolling backwards down the slight grade. There was a recall for this problem - campaign was completed at dealer, but fix is unknown to the owner.
Vehicle is squealing on front passenger side. Also, tranfer case is defective.
Within two weeks of purchase four wheel drive warning illuminated on console. Owner took vehicle in to have it serviced. Before this 4-wheel drive system engaged. Dealership failed to duplicate failure. Before being sold dealership replaced transfer case axle control sensor. Last repair was for transfer case shift control switch. Please describe details.