GMC Yukon Complaints (2026)

44 consumer complaints on file.

#11773487October 25, 2026
UNKNOWN OR OTHER
I am writing to formally report what I believe is a design flaw in my new GMC Denali involving the center console lid. The lid does not have a stopper, dampening mechanism, or other means of holding it securely in the open position. When I lift the lid to reach for an item inside the console, it can fall closed unexpectedly and slam down on my hand. This creates an avoidable risk of injury during ordinary use of the vehicle. Accessing a center console storage compartment is a routine activity, and the lid should not unexpectedly close on the user’s hand. I am concerned that this design may affect other owners of the same vehicle model. I believe the issue warrants review by GMC’s product engineering and vehicle safety teams
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11772626October 21, 2026
ELECTRICAL SYSTEM, ENGINE, STRUCTURE:BODY
My 2026 GMC Yukon Denali Ultimate has had the vadar chrome peel in the first 7000 miles. After that a wiring pinch made the 4 wheel drive unusable during the winter months that I needed it to get into my driveway During summer months the infotainment center completely failed to a black screen and since does not function having the dealership tell me that it will need to be replaced. The 6.2 motor started ticking at 25000 miles, I took it to the dealership yesterday 10/14, the dealership is keeping the vehicle for an estimated 6 weeks to tear the motor apart. The motor is making the noise where it is reported to shut down at high speeds had I not got it in when I did. The vehicle has had no warning to indicate problems.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11771549October 16, 2026
ENGINE
Was operating Yukon on st route 5 doing 55mph when the Yukons engine blew up and the vehicle shut down on me in the middle of the road.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11770520October 12, 2026
ENGINE
While traveling on a state route in Pennsylvania the engine unexpectedly locked up. This was confirmed by the dealer once it was towed to their lot and they were able to inspect it. To date, a replacement engine has not been able to be located yet, its been four weeks and no updates have been received.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11768184September 30, 2026
ENGINE
This engine failed while I was driving. You need to speed up the process and make GM know that their 6.2 engines are failing still to this day . People can get in accidents due to this happening. GM needs to be held accountable for their mistakes. I was lucky my vehicle engine failed near my home and not on the interstate. Please get to the bottom of this . There is no reason that these engines are failing in 2026.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11767753September 29, 2026
ENGINE, POWER TRAIN
On 7/25/26 (a Saturday), we started to hear a noise in my vehicle and shortly thereafter, were sent a service alert through the GMC app and the check engine light came on. We immediately parked the vehicle and took it to the dealership when they opened on 7/27/2026 (Monday). Later that day, we were informed that my Yukon Denali, with 9,226 miles on it, has metal fragments in the oil caused by some sort of failure in the bottom half of the engine and the engine needs to be replaced. The engine was replaced and I picked up my car on 8/17/2026. The check engine light came on again on 8/20/2026 and after three trips to the dealership, my catalytic converter was replaced. Since purchasing my car on December 4, 2025, I have taken it back to the dealership 5 times for non-routine services (and once for a routine oil change). Since purchasing a BRAND NEW 2026 GMC Denali (a car that cost over $100,000) less than 10 months ago, I have been without my car for 33 days for manufacturing related issues that are all under warranty. I still don't think the engine issues are fixed (or I have another bad engine). My vehicle sounds metallic at start up (different than it sounded when I purchased the vehicle and different than other 2024-2026 GMC Yukons with the same engine) and idles rougher than it used to. I am nervous driving my car on road trips now, which is one of the primary reasons we purchased the vehicle. I did my research before purchasing this vehicle and based on information from GM, was under the impression that the engine issues plaguing the 2021-2025 engines had been resolved. This issue is still a MAJOR concern and needs to be investigated and remedied before something more catastrophic happens.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11767887September 29, 2026
ENGINE
Engine failed . Stalled in the middle of the road . Engine ran bad . Shaking knocking and trebling. No engine lights on .
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11764153September 14, 2026
ENGINE
Engine stopped. Would not restart. I had it towed to dealership. They told me the engine is blown. There is only 7700 miles on the truck.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11763830September 12, 2026
ENGINE
Engine failed on this 2026 GMC Yukon Denali.. It had only 18000 miles on it, it failed in middle of hwy in Indiana. Got it towed to dealership.. they haven’t touched it since last 2 days.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11761517September 2, 2026
ENGINE
While traveling at highway speeds of approximately 82 mph in a 2026 GMC Yukon Denali (6.2L V8 L87 engine), the engine experienced a sudden, catastrophic internal failure and completely seized without warning. This resulted in an immediate, total loss of motive power, power steering assist, and power braking assist while surrounded by high-speed traffic. The sudden deceleration and lack of vehicle control created an extreme, life-threatening safety hazard, forcing an emergency maneuver across multiple lanes to reach the shoulder. Stranded on shoulder at night(pitch black) with lots of 18 wheelers passing.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11760884August 31, 2026
ENGINE
-Transmission started to slip when shifting above 2000rpms -Engine light came on and took to dealership -Error code confirmed for valve body, valve #3 failure -New valve body installed after order but also failed as I left the dealership -New valve body currently on order
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11760797August 30, 2026
ENGINE
The engine issue was caused by a misfire in cylinder #5, which resulted in white smoke coming from the vehicle’s exhaust. While driving on the highway, the vehicle lost power and would not accelerate properly, creating a serious safety hazard due to the inability to maintain speed and safely respond to traffic conditions.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11760798August 30, 2026
ENGINE
The engine issue was caused by a misfire in cylinder #5, which resulted in white smoke coming from the vehicle’s exhaust. While driving on the highway, the vehicle lost power and would not accelerate properly, creating a serious safety hazard due to the inability to maintain speed and safely respond to traffic conditions.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11760799August 30, 2026
ENGINE
The engine issue was caused by a misfire in cylinder #5, which resulted in white smoke coming from the vehicle’s exhaust. While driving on the highway, the vehicle lost power and would not accelerate properly, creating a serious safety hazard due to the inability to maintain speed and safely respond to traffic conditions.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11760591August 29, 2026
ENGINE
The engine failed at 5383 miles while driving on remote highway in Nebraska.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11760278August 28, 2026
ENGINE
Driving down highway the engine made a squeeling noise. The engine shuttered and kept making noise then said to reduce speed. Then quit running all together.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11759661August 26, 2026
ENGINE
The contact owns a 2026 GMC Yukon. The contact stated that while driving approximately 15-20 MPH and approaching a stop in Nebraska, there was an abnormal sound coming from the vehicle. The vehicle was shaking and vibrating abnormally. The contact called the local dealer, and an appointment was scheduled. The failures persisted while waiting for the appointment. While driving at an undisclosed speed, the vehicle lost motive power and stalled. The driver alerted OnStar about the failure. The vehicle failed to restart. The vehicle was towed to the local dealer, where it was diagnosed with complete engine failure. The contact was informed that the engine needed to be replaced. The vehicle was repaired; however, the contact no longer wanted the vehicle. The manufacturer was contacted and opened a case and escalated the concerns. The failure mileage was approximately 4,700.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758951August 23, 2026
ENGINE
While we were visiting Canada, our GMC Yukon had fewer than 5,000 miles when its engine seized on the highway. The vehicle was taken to a GMC dealership in Canada. The dealer advised that the engine needed to be replaced, and it has now been replaced. We need to back to Canada to pick up the vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758683August 22, 2026
POWER TRAIN, ENGINE
While traveling on [XXX] from Houston back to San Antonio, my truck engine just blew up without any warning whatsoever. We purchased the truck with 3 miles on it, and we have only put 5,000 miles on it. New cars that cost early $100K shouldn’t be having engine failures like this. I’m lost for words now! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758609August 21, 2026
ENGINE
My yukon denali ultimate had only 3,788 miles on it and on 7/27 while merging onto a highway my vehicle made a sound like it was trying to shift into gear but couldn't and then while I'm pressing the accelerator pedal it's slowing down. There were tractor trailer and vehicles speeding up behind me but I couldn't speed up and I was able to pull over on the shoulder luckily and I'm thankful it did not cause an accident. My yukon would not start no matter what I tried and I ended calling a tow truck and had it towed to my local GMC delearship where I was informed that the engine had seized and they would order a new replacement engine. My yukon is still sitting at the dealership waiting for the repair.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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