One problem related to dash wiring has been reported for the 1996 GMC Suburban. The most recently reported issues are listed below.
While the vehicle was parked and the igniton was off the switch on the drivers door for the side view mirrors suddenly ignited . The keys were not in the car and in fact the car had not been in use for over five hours. Luckily our son went out into the garage and reported back that the car was full of smoke. When I went out the flames were already coming up through the melted holes in the door trim panel.