Engine complaints by model year
Which parts fail
Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).
Mileage when the problem started
What owners report
The contact owns a 2009 GMC Envoy. The contact stated that while driving at an undisclosed speed, the service stabili-trak warning light illuminated. The contact stated that while depressing the accelerator pedal, the vehicle filed accelerate as intended. The contact stated that the failure occurred intermittently. The vehicle was taken to an independent mechanic, but the failure could not be duplicated. Additionally, the contact stated that the battery was drained. The contact stated that the failure had occurred several times previously. The contact stated the battery was charged. The vehicle was taken to an independent mechanic where it was diagnosed with a peracetic battery drain, the battery needed to be replaced. The vehicle was repaired. The failure reoccurred. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 145,000.
The transmission I had to have it replaced but the one they put in it is really acting like the other transmission did no reverse and the first 2 gears were making this grinding noise I've never heard before and it happened when I was backing out the driveway to go to work lucky I made it to the place where I got it to fix it but I believe this transmission they put in it is going to do the same thing because it drives just like the old one
Check engine light is on. According to tests it is the result of a defective throttle position sensor. The light will stay on for a couple of days and then go off for a couple of days creating a error message that something is wrong with the engine. With it going on and coming off it is now difficult for me to get my inspection completed with the sensor reading not being accurate.
GMC used cheap bolts on their v8 motor's exhaust manifolds. I have two broken bolts on one side and 1 on the other. Carr of vancouver gave me a quote of $ 2374.00 plus tax to fix this problem. They said it was a well known problem with all of the v8 motors by GMC. I contacted GMC and they refuse to do anything about this. I have researched it on the internet and there are hundreds of people who have had this same problem. The question isn't if this will happen to one of their vehicles but when it will happen. It is such a wide and known problem a company has actually made came out with a bracket to fix this problem. I don't feel that this should be a consumer problem but it should be a manufacturer problem. I would appreciate any help. I feel that they should have to recall these defective bolts and replace them with the right ones. …
Tl* the contact owns a 2007 GMC Envoy. While driving various speeds, the vehicle stalled without warning. The vehicle was towed to the dealer where it was diagnosed that the engine failed due to the timing belt, which needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 80,000.
Misfire in cylinder car cut completely off in traffic it only happens when you accelerate like entering the ramp to the highway as you accelerate onto the highway car will misfire cutting off very dangerous situation.
The contact owns a 2006 GMC Envoy. The contact stated that occasionally the vehicle was not able to be started. Additionally, while driving at various speeds, the steering wheel seized and the vehicle lost motive power. The vehicle was taken to an independent mechanic. The mechanic informed the contact that no codes appeared on the code reader and replaced the battery; however, the failure recurred. The vehicle was then taken to the dealer and diagnosed that the computer needed to be reset after the battery was replaced. The dealer reset the computer; however, the failure recurred. The vehicle was taken back to the dealer and diagnosed that there was a leak in the intake manifold after a smoke test was performed. The dealer replaced the manifold gasket; however, the failure recurred. The vehicle was not repaired. The manufacturer was not made aware of the failure. …
The contact owns a 2006 GMC Envoy. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power. The failure occurred on three separate occasions. The vehicle was taken to an independent mechanic and diagnosed with fuel pump and fuel pump sensor failure. The fuel pump and fuel pump sensor needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 270,319.
Related recalls (1)
Engine and engine cooling
Some sport utility vehicles equipped with an electronically controlled air suspension (ecas) have a condition in which the ecas May produce a brief electrical spike while the vehicle is operating. This electrical spike can disrupt the powertrain control module (PCM) causing the vehicle to stall.
Remedy: Dealers will install a wiring harness. The recall will begin on August 19, 2004. Owners should contact Oldsmobile at 1-800-630-6537 or GMC at 1-866-996-9463.
NHTSA investigations
ENGINE STALL
Of the 697 total complaints, 240 were received for theenvoy and 457 for the bravada.GM has identified about 5,000 warranty claims related to stalling in the subject vehicles.GM reports that a transient voltage spike generated in the ecas degrades the performance of the PCM resulting in engine stall.GM modified the ecas wiring bundle and the PCM for vehicles built after December 6, 2001 to address the stalling…
ENGINE STALL
Model year (my) 2002 bravada and certain my 2002 envoy vehicles with optional electronically controlled air suspension (ecas) May be subject to engine stall caused by an errant voltage spike transmitted to the powertrain control module (PCM).in addition to engine stall, if the spike damages the PCM, the vehicle May not restart.on October 31, 2001 GM introduced into production a wiring harness containing an inductor…
Frequently asked questions
Which GMC Envoy years have engine problems?
By NHTSA complaints, the 2002 (104), 2006 (42), 2005 (41), 2003 (35) and 2004 (35) model years. Engine complaints make up 21% of all complaints for the 2002.
Is there a recall for GMC Envoy engine problems?
Yes — 1 recall, including 04V-289 (engine and engine cooling, Jun 23, 2004). Recall repairs are free at authorized dealers; check a specific car with the VIN recall check.
At what mileage do GMC Envoy engine problems start?
Across all years, half of the complaints with a recorded mileage happened before about 77,000 miles; 34% happened before 50,000 miles.
What part fails most often?
Owners most often name the engine (45 mentions), followed by the engine › gasoline (31).
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.