GMC Envoy loss of power problems

Filed Jul 12, 2025 · AZ

Went to store bought food Left store and car started chugging and losing power When I got home my son said he could smell exhaust and it sounds like the catalytic converter

Filed Jul 14, 2022 · Acceleration, Electrical · UT · fire

I purchased my vehicle in oct of 2021 in Nov 2021 is when my car started failing my car started to lose power also started smoking from the lower passenger side no warning lights came on besides the oil warning light since Nov 2021 my car has been losing power it only goes up to about 40 m.p.h I have been smelling fuel coming from some where my tail and license plate light and back driver side inside car light stopped working the engine light turns on and off the steering wheel makes the car lose a little bit of power when I turn the wheel or when I roll up and down the windows or adjust my seat my ac does not work the back ac turns on by it's self to the heater does not work when I have it turned all the way to the 5 I hear clicking knocking noises in the back passenger side of the car my fuel injectors had puddles of oil in them the car gets really hot and blows hot air the engine is always hot the seatbelt lights are constantly flashing my check engine light as of today flashes on and off and the car jumps also my car caught on fire under the hood where the O2 sensor is started smoking than caught on fire.

Filed Jun 17, 2017 · Steering · 156,288 miles · TX

On this model of trailblazers and envoys there is a serious issue with the power steering line cracking on the back side if the steering shaft, causing fluid to spray out and immediate loss of power steering. When this line broke my wife was driving at highway speeds with my 4 kids in the vehicle, and she was barely able to maneuver the vehicle out of traffic to a safe spot, almost causing an accident. I have spoken with many other owners of these SUV's and found this to be a very common problem.

Filed Feb 14, 2017 · Electrical, Engine · OH

Tl* the contact owns a 2007 gmc envoy. While driving approximately 65 MPH, there was a sudden loss of power and a warning indicator illuminated for limp mode. The vehicle drastically reduced speed to less than 35 MPH. The contact had to slowly drive in the emergency lane. The vehicle was turned off and back on, but the limp mode failure continued. The contact was unable to drive over 35 MPH. The vehicle was taken to a dealer who kept the vehicle for longer than two weeks. The dealer cleared multiple codes, but was unable to provide a solution. In addition, months later, the engine locked and failed to function. The vehicle was unable to be driven. The manufacturer was not notified of the failures. The VIN and failure mileage were not available.

Filed Nov 26, 2016 · Brakes, Driver assistance · 92,000 miles · NY

"takata recall" when I first start the car and begin to accelerate the traction control system activates causing lose of power - very dangerous when pulling out into traffic. I have to disengage the system on the shift handle to prevent this from happening. I am also experiencing the ABS problem of activation when coming to a stop in all conditions. It is already a recall for gmc vehicles up to 2004 but obviously not corrected. The traction control system activates every time after first starting the car. The ABS system is sporatic. No warning that it is about to happen. These systems fail daily without exception.

Filed Aug 27, 2016 · Acceleration, Electrical · 40 miles · PA

While in motion only, a engine light accompanied by a reduced engine power engages making the vehicle unmanageable to response and cause the vehicle to stall.

Filed Jun 1, 2016 · Body, Engine · 128,000 miles · MN · fire

Vehicle was being driving approximately at 55 MPH. Engine loss power, gas pedal lost resistance and went all the way down to the floor board. Vehicle was pulled over to the side of the road and engine was stalled and all the dash lights were flashing one and off. Engine started to have white smoke coming from under the hood. After a few minutes, the white smoke turned into black smoke and the engine caught on fire. Vehicle was engulfed in flames after a few minutes.

Filed Dec 29, 2015 · Acceleration, Engine · 124,500 miles · OH

While driving the envoy at about 45 MPH, a warning light saying "reduced engine power" came on suddenly, the car dropped down to about 20 MPH, and that continues to occur. I can turn off and restart the car, but the problem returns within a minute after driving it again. I started investigating what that means online, and, as with anything else on the internet, I see many opinions, guesses, and possibilities. Could be a bad sensor, bad throttle control, bad wire connections, etc. But this much appears clear: (1) it is a gm problem, and a very, very common one. (2) it is a dangerous problem. This seems pretty obvious - the car suddenly loses speed and evidently sometimes stalls out altogether. But hearing about so many other people's scary experiences just confirms this. (3) it can be difficult and expensive to diagnose and fix. When I think of these facts, coupled with gm's recent history, I immediately think "recall." this certainly appears to be an appropriate situation for a manufacturer to step in and fix the issue before more people get angry with gm, get hurt, or get killed. I called the dealer who sold the car (I am the second owner), in columbus, ohio. I was told that I can bring it in for a diagnosis for $110. (gee, thanks - wouldn't have thought of that.) the customer rep looked up the VIN and said that the vehicle was not eligible for recall or any special policy. Therefore, I am contacting you in hope that something else can be done.

Filed Oct 28, 2015 · Electrical, Engine · 120,000 miles · MN · fire

Vehicle was being driven on a two way highway at approximately 55 MPH. Vehicle lost engine power while driving and the gas pedal lost resistance and went to the floor. Vehicle was steered over to the side of the road. While the vehicle was steered over to the side of the road, check engine and other dash lights started flashing chaotically. White smoke started coming from under the hood. Within a short time, white smoke turned into black smoke and then flames started to appears. The fire under the hood eventually continued to grow until it completely burned the engine compartment most of the first two rows of the interior before the firemen arrived and were able to put out the fire.

Filed Jun 2, 2015 · Electrical · 248,000 miles · TN

Tl* the contact owns a 2002 gmc envoy. While driving 55 MPH, the vehicle experienced a total loss of power and the instrument panel malfunctioned. The vehicle was not able to be restarted and had to be towed away to the dealer. The technician diagnosed that the main fuse needed to be replaced. The vehicle was repaired, but the failure recurred. The manufacturer was not made aware of the failure. The failure mileage was 248,000.