I TOO HAVE EXPERIENCED PROBLEMS WITH THE HVAC SYSTEM OF THIS TRUCK. I HAVE HAD TO REPLACE NO LESS THAN 4 RESISTORS AND CONNECTORS DUE TO MELTING AND BURNED CONNECTIONS. I HAVE NOT HAD TO REPLACE A SINGLE FUSE. MY HVAC IS ONCE AGAIN INOPERABLE AND I HAVE OPENED AND INSPECTED EACH CONNECTION POINT TO LOCATE THE PROBLEM. I HAVE FOUND MULTIPLE CONNECTORS TO BE BURNED OR MELTED. THIS PROBLEM HAS BEEN FLAGGED BY THE NHSTA IN THE HUMMER H3 VEHICLES WHICH USE THE SAME HVAC SYSTEM. THE CHEVROLET/GMC/ISUZU COLORADO/CANYON (GMT355) SHOULD BE INCLUDED IN THIS RECALL. THERE IS NO REASON THESE CONNECTIONS SHOULD GET HOT ENOUGH TO BUBBLE AND BURN PLASTIC BEFORE BURNING OUT A FUSE. I CAN PROVIDE IMAGES UPON REQUEST. I CAN ALSO PROVIDE AN EXAMPLE OF A FAILED CONNECTOR IN THE HVAC SPEED CONTROL SWITCH FOR PHYSICAL INSPECTION. I HAVE SET THE "FIRE" FLAG ON THIS REPORT AS THERE HAS BEEN EVIDENCE OF MULTIPLE ELECTRICAL FIRES ON MULTIPLE OCCASIONS IN SEVERAL LOCATIONS IN THE HVAC SYSTEM OF THIS VEHICLE. *JS