Wiring Problems of 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.

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As I was driving down interstate at 70-75mph , the headlights, dash lights, all the lighting just shut off! I had no idea what to do. I was on one of the most dangerous interstates, known for fatal accidents. . . And I'm driving in the dark without lights! I quickly moved to side of road and shut it off in case of faulty wiring/fire hazard. After approx. A five minute phone call, I started car, lights worked. Started driving again, approx. 10 minutes down road, lights shut off again. I hope this problem is resolved soon! this is dangerous and can kill people!.

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I got home one evening and when I turned the ignition key to shut the truck off the engined continued to run. I was concerned; as I could not leave the vehicle running all night; at that point I tried to engage the key again and the vehicle was still running . I became concerned and started to fiddle with the knobs and was suprised when after turning the highlight switch the engine shut off. The next morning I hestitately attemped to start the vehicle and when I was sucessful I headed straight to the GMC dealer. The dealer said that it was a wiring problem and the ignition wiring had to be redone; (the cost was $1600. 00) I started a dialoge with gm and they engaged me with several conversations; which led me to believe that they would pick up the cost; as electricial components were not part of any scheduled maintenance that I as a owner would be responsible for. When I made a request for reimbursement I was told that because of the mileage there was nothing they could (or would do). I could see if it were related to an oil change. Brakes,filters,etc. But as a owner this item is outside of my area of responsibilty. Gm should stand behind their products and make me and others whole. Ps.

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I have a 2005 GMC Envoy and I have had to replace a water pump, a blower motor wiring harness that melted into my truck, the lights are half out on me heater and my door panel where you put the windows up and down, the winshield wiper in the back works when it wants my speed ometer is stuck on 40 even when its off and my check engine light is on and I bought this truck less than 2 years ago!.

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In six years my 2003 Envoy has had nothing but electrical issues. My lights are constantly being replaced. My head light wiring has shorted out and now the whole wiring connection needs replaced. The latest is an electrical system problem that is draining my battery and not allowing it to properly charge.

Speedometer jumps from 120 to wherever. Can never tell how fast or slow I'm going. Never displays correct speed. Oil pressure gage goes up and down. Also, headlughts keep going out. Had to take to mechanic to redo wiring for both headlights.

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.

One day my oil gauge stopped working. A few months later the speedometer stopped working and eventually every gauge in my panel stopped working. This all started around Nov of 2008. I could not figure out what was going on. I checked all fuses, bulbs and wiring. Now two days ago my head lights stoped working on low beam. Nothing was found to be the problem. I recently found hundreds of Envoy owners with the exact same issues and now know it is the instrument cluster panel. Est cost for the part only $570.

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.

GMC dealer service tech found the wire to rear defroster corroded and broken. Repaired wiring.

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Continued electrical problems with 2002 GMC Envoy. Such as on-star telephone along with radio/cd player, all four doors failing to lock or open including the back hatch. Service air bag light and engine check lights coming on. Reprogram engine/transmission module, also telephone antenna replaced, short in wiring located due to rubbing/pinching during construction, replaced wiring harness. Hundreds of dollars required to identify short in wiring. Transmission operates sluggish until warmed-up vehicle feels as if the brakes are on until it has moved several blocks.

Stoped by cop, unaware rt front light went out, got warning letter. Socket burnt and smelled strongly of electrical burning. Taking it to dealer on Monday.

The contact owns a 2002 GMC Envoy xl. The contact stated that he has been experiencing the same failures as noted in recall # 03v096000 (electrical system: wiring: interior/under dash). He has taken the vehicle to the dealer, but the failure still persists. The contact stated that the seat belts continue to lock and the windshield wipers are malfunctioning. The wipers have been replaced numerous times and the failure causes limited visibility in certain weather conditions. The suspension for the arms of the ball joints was replaced and the vehicle continues to shake, shimmer, and make a loud noise. The vehicle was repaired, but the failures are ongoing. When turning, the steering wheel hesitates and causes the vehicle to jerk uncontrollably. When the windows are down, the interior lights dim due to an electrical short. The tires were changed four times, but continued to fail. The contact stated that the brakes have been replaced repeatedly. The dealer stated that the discs were failing due to adverse weather conditions. The current mileage is 68,000 and failure mileage was 38,000. Updated 1/15/09 the catalytic converter, the camshaft, and engine coil was replaced. The check engine light is still on. Updated 01/21/09.

Since car is new we continue to have melting issue with wiring and harness behind radio rack and areas that are affected in this instrument cluster. This has happened so many times GMC has extended the warranty on car to cover all of the car. It is again causing a problem, lights out on cluster, lighter inop, heater and a/c fans not always working.

Faulty wiring in brake light caused vehicle to catch on fire. Gm has offered to repair but I still don't feel it is safe.

Transmission does not work properly. Have had it repaired twice, but still vibrates, and fails to move vehicle forward at times, from a dead stop. Is very dangerous at intersections where moving quickly is imperative. Also wiring problems which operate various remote instruments (mirrors, seats, etc. ) fear of fire. Rear door latch was replaced - clicks "locked/unlocked" while driving. Seats move on their own while driving.

My 2002 GMC Envoy lost all power three times at high rates of speed. The first time we had it serviced and I was told a module needed replaced. The second time, the car shut down at highway speeds but restarted approximately 15 minutes later but then the same thing happened again the next day while my wife was driving home from work traveling at 65 mph down a highway. We had it serviced again and this time I was told it was due to a loose wiring harnass. Car has had numerous problems since and it is an unsafe vehicle for my family to be transported in.

The electrical computer memory for the exterior mirrors and the seat adjuster failed. This caused the seats for driver and passenger side not to be adjusted. Also the mirrors are not able to be adjusted. Driver has to continously adjust the miirrors in order to see. Dealer reset memory seats, reprogrammed mirror memory, and replaced left and right front seat modules. Did not remedy problem. Customer states that there is a fuel leak loss of 1/2 tank in 3 miles. Dealer repaired loose connection between main fuel line and the fuel tank.