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.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.

9.3

really awful
Typical Repair Cost:
No data
Average Mileage:
124,667 miles
Total Complaints:
3 complaints

Most Common Solutions:

  1. not sure (3 reports)
2003 GMC Envoy engine problems

engine problem

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2003 GMC Envoy Owner Comments

problem #3

Dec 121916

Envoy LX 4.2L

  • Automatic transmission
  • 113,000 miles

A D V E R T I S E M E N T S

While driving, suddenly speed is reduced to 10 miles per hour, reduce engine power light on, to go back to normal, must restart the engine.

- , la Habra, CA, USA

problem #2

Jan 012013

Envoy LS

  • Automatic transmission
  • 116,000 miles

THE CHECK ENGINE LIGHT COMES ON WHILE DRIVING, THEN THE REDUCED POWER LIGHT COMES ON AND THE SPEED SLOWS DOWN TO ABOUT 20 MPH. I HAVE HAD THE ACCELERATOR PEDAL CHANGED TWICE. THE THROTTLE BODY REPLACED, AND IT HAS STARTED AGAIN. THE DEALER NOR MY MECHANIC CAN FIND THE PROBLEM.

- , Atlanta, GA, USA

problem #1

May 282010

Envoy 4.2L V6

  • Automatic transmission
  • 145,000 miles

Vehicle loses power as reduced engine power light comes on. Slows to 20 mph. You can regain power by putting the vehicle in neutral and turning the vehicle off and on again. Some days, it will do it 1-2 times, other days 25 times. Sometimes it will go 2-3 days without doing it. My daughter almost got hit on the side because it lost power as she pulled out on a busy street. Check engine light codes point to everything I have already replaced (pedal sensor, fan clutch, and computer). Two repair shops have completely given up on it. They have no idea how to resolve the issue after having the car for over a month each.

- , Houston, TX, USA

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