Defogger problems of the 2000 GMC Sonoma

There is no non heated fresh air that can come into vehicle while consumer is driving no matter what consumer does. Consumer had an accident in which vehicle rear ended another vehicle at about 5 mph. Contacted dealer, and dealer really did not have a remedy for problem. Air ventilator malfunctioned.

Radio goes on and off, will turn on by itself, and sometimes could smell like a burning not knowing where it is coming from. Also, headlights will blink on and off. Inside lights and radio flicker. The dealer diagnosed that there was suspension problem and the passenger side heat source was inoperable.

The ventilation system in the vehicle works at start up but about 20 min. Later the forced air flow stops, the motor still makes the sound as if it is still in operation but there is no air flow, fog build up on the windshield can not be cleared causing poor visibility. Nlm.