Two problems related to seats have been reported for the 2003 GMC Envoy. The most recently reported issues are listed below.
Vehicle caught fire under dash somewhere without vehicle being turned on.
Safety problem regarding control of driver's rear view mirror on 2003 GMC Envoy. There had been a strange combination of electrical events centered around the accessories in the left front of the vehicle and the left door mirror. Other problems: the seat would move erratically when starting and shutting down, the driver's side door did not lock in sync with the others, the locks would click 4 times after driving one mile, and the control button lights on the drivers arm rest was coming off.