Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

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definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
26,417 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2004 GMC Envoy cooling system problems

cooling system problem

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2004 GMC Envoy Owner Comments

problem #3

Feb 092009


  • 50,000 miles


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

problem #2

Nov 012005

Envoy 6-cyl

  • Automatic transmission
  • 29,250 miles
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

problem #1

Apr 222004


  • miles
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

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