Two problems related to rearview mirror have been reported for the 2003 GMC Envoy. The most recently reported issues are listed below.
Car dash blank at start, mirrors go every direction and must reset every time I start the vehicle.
While driving driver cannot adjust the two side mirrors. Consumer learned the side mirrors couldn't be adjusted by manual movement nor power. He assumed this was a part of the vehicle. He felt this was a safety issue-driving and adjusting the mirrors with his hands.