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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hardly worth mentioning
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
138,382 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.

2003 GMC Envoy engine problems

engine problem

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2003 GMC Envoy Owner Comments

problem #6

Nov 232015

Envoy 4WD 6-cyl

  • 119,292 miles


The contact owns a 2003 GMC Envoy. The contact stated that a strong fuel odor emitted inside and outside of the vehicle continuously. Additionally, the engine warning indicator illuminated whenever the vehicle was in operation. The contact received notification of the manufacturer customer satisfaction program related to the fuel tank inlet valve replacement. The remedy part needed to perform the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the repair. The manufacturer was notified of the failure. On November 23, 2015. The failure mileage was 119,292. Updated 07/05/16

- Scipio, IN, USA

problem #5

Jan 022010


  • 150,000 miles
The contact owns a 2003 GMC Envoy. While operating the vehicle, the service engine light illuminated. While in four wheel drive mode, the vehicle would not accelerate. The vehicle was taken to the dealer where it was diagnosed that the icv was faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 150,000.

- Cynthiana, KY, USA

problem #4

Oct 182006


  • 85,000 miles
My 2003 GMC Envoy just turns off at any given moment. Out of no where, while driving, waiting at a red light or stopped at a stop sign my car just shuts down/turns off. It's been doing this for years. Very dangerous and unsafe. Secondly the "service engine soon" light on my 2003 GMC remains on. Took it into been serviced by the GMC dealer service department and they couldn't figure out the problem. Now I cannot get my car to pass inspection nor get it register. This is a major problem.

- Buffalo, NY, USA

problem #3

Jun 012015


  • 169,000 miles


I noticed a electrical burning smell while driving on a side street. The engine made an unusual noise so I pulled over, turned the car off and put on the hazard lights. While waiting for the tow truck, the car started with no key in the ignition. The car ran for a short time then stopped and attempted to restart itself about 5 times. Our mechanic took a look at it and said there had been a fire in the fuse box. I took pictures of the charred remains of the fuse box, cover and connectors. Most of the plastic connectors under the fuse box could not be removed because they had melted and were fused onto the box. He noted the fire seemed to originate from fuse 46, the headlamp driver module. For the past few years, I had been experiencing headlight and tail light issues involving bulbs that were burning out frequently or were going out then coming back on.

- Raymore, MO, USA

problem #2

Mar 032014


  • 137,000 miles
The contact owns a 2003 GMC Envoy. The contact stated while driving approximately 30 mph, the check engine light would illuminate and the vehicle would stall on numerous occasions. The vehicle was taken to an independent mechanic who replaced the fuel pump. The repairs did not remedy the failure. The independent diagnosed that the fuel tank needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The VIN was unavailable. The approximate failure mileage was 137,000.

- Boxborough, MA, USA

problem #1

Jan 162013

Envoy 6-cyl

  • 170,000 miles
The contact owns a 2003 GMC Envoy. The contact stated that while driving approximately 45 mph, the check engine warning light illuminated and there was loss of engine power. The vehicle was taken to a private mechanic where it was diagnosed that the sensor pedal, the clutch fan, wiring terminals, and accelerator pedal needed to be replaced. The manufacturer was made aware of the failure. The vehicle was repaired but the failure recurred. The approximate failure mileage was 170,000 and the current mileage was 175,00.

- Narvon , PA, USA

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