Wiring problems of the 2006 GMC Envoy

I have a 2006 GMC Envoy denali that caught fire this morning, it was an electrical fire, caused in the hvac blower circuit, the circuit fuse did not blow, the cabin filled with smoke, and an open flame was created. I managed to put the fire out, however someone else in this situation might not have even been able to pull off a busy highway, let alone extinguish the fire as it was under the dash behind the glovebox. The symptoms before the fire were as follows: 1)a faint burning electrics smell (electrical smoke is very distinctive) 2)blower quit running(within 30 seconds of smell) 3)cabin filled with smoke (within 1 minute of smell) to the point I could not see out the windshield 4)open flame was present under dash (within 2 minutes of smell) the vehicle was in motion, 50mph, heating system was running, outside temperature 5* fahrenheit. This appears to be a common failure point as there are multiple repair kits available with new wiring connectors to replace damaged ones when replacing speed resistor there were no previous issues with the hvac blower motor system.

Wife's 2006 GMC Envoy heater lights,and high blower quit working,took to corner service station to find out what was wrong and fuse block on heater motor was melted. Talked to mike and he said when he opened service book,it told of this problem to check it first,needs wiring harness and fuse block replaced. If it melted together it sounds like a fire hazard,if it is first place to look in repair manual,sounds like its a defective parts problem.

The contact owns a 2006 GMC Envoy. The contact smelled a burning odor coming from the vehicle and parked it overnight. The following morning, the air conditioning system would not operate. The dealer stated that there was a heating resistor that melted some of the wires in the ignition system. The wiring harness was replaced and the dealer advised the contact not to activate the air conditioning system on low power; only medium and high due to the power needed by the blower when running on low. After the repairs were made to the wiring harness, the fuel gauge became inoperable on the instrument panel. The failure mileage was 26,000 and current mileage was 27,000.