2003 GMC Envoy engine problems

Filed Mar 12, 2026 · Electrical, Engine · 98,000 miles · PA

The contact owns a 2003 GMC Envoy. The contact stated that while in drive(D), the vehicle shut off and then restarted. The message “Service Engine Soon” was displayed. The vehicle was taken to the local dealer, where it was diagnosed and determined that the instrument cluster needed to be replaced. The vehicle was repaired, but the failure reoccurred. The vehicle was taken back to the dealer who installed the original instrument cluster, but the failure persisted. The manufacturer was not notified of the failure. The approximate failure mileage was 98,000.

Filed Jul 24, 2018 · Engine · 230,000 miles · GA

Gradual coolant loss over time and no evidence of leak. This was due to a crack in the cylinder head that gm admitted to knowing about in tsb 06-06-01-019b on june 12, 2007). Coolant was slowly leaking into the oil, but was unnoticeable until it started to affect oil pressure from the oil becoming slushy and ruining the engine. This ended up resulting in resulted in the low engine oil light suddenly coming on and the car to stop running on a highway. The engine started steaming and the car was overheating. Mechanic is now saying the engine is in an unoperable shape due to driving with continued low oil pressure (no light had appeared until day of incident). Gm had sent out a bulletin admitting to the issue but did nothing to notify their customers. They should immediately recall the affected vehicles and/or pay for a replacement. I had just put in a new transmission to my gmc envoy, expecting it to last for years.

Filed Jul 10, 2017 · Electrical, Engine · 114,000 miles · TX

Car dies when driving, car wont start sometimes and hour or 2 later starts mechanic said alternator and battery are good, in parking lot and driving in the city

Filed May 6, 2017 · Body, Engine · 160,102 miles · CA

It started with engine misfiring causing engine to jolt which damaged #4 coil pack seal to failed allowing water intrusion. In 2008, the gmc mechanic replaced all six coils seals but in 2013-present p0440 engine code is a leak in the evaporative emission (evap). Loose fuel tank filler cap is the most common cause that triggers the p0440 code. I failed a few smog check spending hundreds of thousands of dollars yet my problem still existence. I've contacted the bureau of automotive repair because purrfect auto in fullerton,ca lied about fixing my car. The bar made purrfect auto replace the gas tank and gas cap yet the engine light is still on displaying code p0440. Its been 14 years and I'm still dealing with this problem.

Filed May 10, 2016 · Engine, Fuel system · 119,292 miles · IN

Tl* 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

Filed Jan 12, 2016 · Engine · 150,000 miles · KY

Tl* 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.

Filed Jul 5, 2015 · Engine · 85,000 miles · NY

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.

Filed Jun 8, 2015 · Electrical, Engine · 169,000 miles · MO · fire

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.

Filed Aug 8, 2014 · Engine, Fuel system · 137,000 miles · MA

Tl* 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.

Filed Feb 17, 2014 · Engine, Steering · 64,926 miles · IL

All of a sudden the power steering of the envoy slt 2003 was completely interrupted due to a broken shaft in the power steering pump. As a result the serpentine belt slipped on the edge of the power steering pump pulley and was wearing out quickly, which would have resulted in a broken belt.