2004 GMC Envoy Xuv wipers, windshield & visibility problems

While traveling on interstate 90 at 75 miles per hour, the rear tailgate glass implode into the passenger compartment for no apparent reason. Nothing had come in contact with the rear glass, nor where there any other vehicles in the area at the time to have caused this the glass was sprayed all around in the pack compartment of the vehicle.

I purchased a 2004 GMC envoy xuv and have several significant problems with this vehicle. After researching it seem others have had the same troubles. Since we owned the vehicle, the rear window is found down and noone was even in/near the vehicle. It continues to work but still will go down by itself. A year ago I had to replace the fuel tank, this was right after we took it in for inspection on a recall of smelling gas fumes while driving and possible corrosion in fuel lines.