The contact owns a 2004 GMC Envoy. The contact observed while driving the speedometer displayed an inaccurate reading regardless of the speed being traveled. In addition, there was a malfunction with the headlights remaining "on" when deactivated. The failure occurred intermittent. The fan clutch failed unexpectedly. The vehicle was taken to an independent mechanic for inspection. The fan clutch was replaced. The contact had concern of the safety risk involved. The failure mileage was 50,000. The current mileage was 57,000.

- Newport News, VA, USA

Headlights, driving lights and all interior lighting dim and flicker approx every 30 seconds. Has been this way for over 10 days, dealer cannot diagnose problem until the "service engine soon" light comes on, which it hasn't. it is nearly impossible to drive at night with dim, flashing, headlights, and is confusing to other drivers. Also, a fan can be heard blowing off & on approx once every minute, and this is with the vehicle completely turned off and the key out of the ignition. This is constant, I'm concerned the battery will be dead and the car won't start, or that the lights will completely go out while I am driving at night. Rear passenger door locks suddenly stopped working with the remote and the door unlock switch on the driver's door. I have to climb over the front seat into the back to physically unlock the door to remove my children from the car.

- Toms River, NJ, USA

2004 GMC Envoy developed the following problems: Vehicle stalled, turn signals stopped working, blower fan stopped working, and the SRS light remains lit. The turn siganls stopped working due to a short in the flasher. The powertrain control module was replaced due to the ses light iluminating. The blower motor fan failed 4 times due to a short in the wires and control head. The vehicle overheated, but the problem could not be diagnosed. The lcd displays, knobs become extremly hot after hours of driving.

- Edison, NJ, USA