One problem related to transmission gear slipping has been reported for the 2003 GMC Envoy. The most recently reported issues are listed below.
Problems with vehicle's windshield wipers. The consumer noticed that everytime the windshield wipers were used, they would bounce across the windshield so much that the consumer was unable to see and in order for them to be used, the consumer had to keep turning them on and off to see properly. The vehicle was taken to the dealer at least four times to have the wipers adjusted and replaced. The last time however, it was determined that there was a bow in the windshield and it needed to be replaced. After having the windshield replaced, the consumer continued to experience problems. There was a film on the windshield and when the wipers were used, the consumer could not see properly. On two occasions the 4wd/a4wd light illuminated and the vehicle was stuck in 4wd and then all the lights went out and the transmission was slipping. The vehicle was taken to the dealer and the computer had to be reprogrammed. The consumer also stated the rear wipers failed and the dealer found a nut loose and the front washer hose did not work and there was a kink in it. There was noise coming from the windows, although the dealer said it was coming from the mirrors.