Defroster/defogger/hvac System problems of the 2016 Chevrolet Silverado 1500

The contact owns a 2016 Chevrolet Silverado 1500. The contact stated that when the vehicle was started, the rear sliding glass defroster element overheated. The contact was unsure but thought that the defroster had activated independently. The contact stated that the heating element had caught fire, burned a hole through the weather stripping, and shattered the rear sliding glass. The contact extinguished the fire with a can of soda. The contact had not taken the vehicle to a local dealer or independent mechanic. The vehicle was not yet diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 106,000.