GMC Sierra Complaints

15,732 consumer complaints on file.

#11712601January 22, 2026
UNKNOWN OR OTHER
IntelliBeam will sometimes allow me to activate the system but will turn itself off and not allow it to be reactivated until the power is cycled. Other times it will not activate at all. This is on a dark backroad with no traffic.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712299January 21, 2026
ENGINE, POWER TRAIN
2024 gmc engine 6.2 that failed had the recall test done and a couple of mounts later engine started making loud knocking sound its at the shop now getting a new engine in been at the shop for about 3 weeks now
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712373January 21, 2026
ENGINE
Lifter failure in 5.3 liter V8 causing extended repair
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712398January 21, 2026
ENGINE, FUEL/PROPULSION SYSTEM, POWER TRAIN
2026 GMC Sierra Elevation X31 with 3.0 Duramax Diesel engine, 132-miles, thrust bearing 1.53-mm out of tolerance requiring engine and turbo replacement. Engine build date 25219 (07 AUG 2025), vehicle assembly date August 2025, purchased 10 OCT 2025, entered service for engine and turbo failure on 11 NOV 2025, returned 10 JAN 2026.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712433January 21, 2026
UNKNOWN OR OTHER, ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:UREA INJECTION SYSTEM (DEF)
Diesel exhaust fluid tank heater malfunctioned and meted tank and connectors.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712042January 20, 2026
ENGINE, ENGINE AND ENGINE COOLING
The contact owns a 2024 GMC Sierra 1500. The contact stated that the vehicle was included in NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling) in October 2025, and the vehicle was taken for inspection. The vehicle passed the inspection, and the recall was closed. The following month, while driving approximately 60 MPH, the vehicle started losing motive power and decelerated to approximately 30 MPH with an abnormal clanking sound coming from near the engine compartment. The contact was able to pull to the side of the road and waited before driving 30 MPH to a nearby dealer. The check engine warning light and an unknown sensor light were illuminated. The vehicle was taken to the dealer, who diagnosed that there was a loss of power due to engine failure and that the engine needed to be repaired. The engine was replaced. The manufacturer was made aware of the failure, and a case was opened. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 67,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712065January 20, 2026
ENGINE
There is an active recall for the 6.2 L engines, which is what I have and it’s an issue with burning oil and catastrophic engine failure due to rods and bearings. And I just got this vehicle in November and I have already went through 15 quarts of oil in two months so I’m waiting for my engine to blow up going down the road to cause a wreck like has happened to multiple vehicles already and I also have a rod knock now due to this issue so it could be any time now that my engine fails and I end up getting hurt or my family I took it to the Chevy dealership and I have called GM to do an oil consumption test and to put in a claim so that way if it does fail, then it has paperwork to follow, but it is a major safety concern but something needs to be done considering there’s already 600,000 recalls on this issue already there needs to be more for the rest of the people that are having this issue like myself and I’m spending $50,000 on this truck for the engines to fail and me end up dying before something‘s done. and it’s also very distracting as you’re driving down the road and your vehicle tells you that you’re low on all so you have to try to find a way to get off the highway to have someone bring you all so you can continue to drive and it’s not just a cordial. It is up to 5 quarts of all at a time.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712069January 20, 2026
STRUCTURE:BODY
I was driving on the interstate and the upper grill broke off of the truck and hit my windshield.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712072January 20, 2026
ENGINE
The bearings in my engine failed while on the road! The dealer says I need a full engine replacement for $16,000. There were no warnings or indication there was a problem. The vehicle has been maintained perfectly since it’s purchase.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712108January 20, 2026
ENGINE
The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the engine seized. No warning lights were illuminated. The contact disabled the stop-to-start feature, and the failure ceased. The vehicle was taken to the dealer, and the contact was informed that the repair was not covered under recall. In addition, the contact was informed that the vehicle needed to remain with the dealer for two weeks while performing diagnostic tests on the vehicle. The contact was unable to be without a vehicle for two weeks. The vehicle was the only means of transportation. The contact stated that the failure was a known failure with the vehicle and that the manufacturer needed to repair the vehicle. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure, and a case was filed. The contact was informed that the repair was not covered under the recall. The contact was advised to take the vehicle to the dealer for a diagnostic test. The failure mileage was approximately 123,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712114January 20, 2026
ENGINE
The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at various speeds, there was an abnormally loud clamoring sound coming from the engine. There was no warning light illuminated. The vehicle was taken to a dealer, and the mechanic informed the contact that the engine might fail soon. The contact was able to continue driving the vehicle, but the contact was advised to bring the vehicle back if the failure worsened. The following day, the contact stated that the front of the vehicle started shaking with several unknown warning lights illuminated on the instrument panel. The vehicle was taken back to the dealer and remained with the dealer undiagnosed. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 71,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712140January 20, 2026
POWER TRAIN
While driving in traffic in March 2025, the vehicle experienced a sudden and complete engine failure, creating an unsafe condition. Subsequent diagnosis confirmed failure of the camshaft and lifters, requiring full engine replacement. General Motors declined to cover this repair. However, this failure is consistent with widely reported camshaft and lifter issues affecting other GMC and GM vehicles equipped with the same 6.2L engine platform. Due to the unavailability of replacement engines through GM, I was forced to wait several months for an engine sourced through Jasper Engines. During this time, the vehicle was inoperable, resulting in over $10,000 in out-of-pocket expenses, including extended rental vehicle costs. The engine replacement was completed by Camden Automotive and Diesel in Camden, South Carolina, who maintain all service and maintenance records related to this repair.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712150January 20, 2026
ENGINE
Vehicle is having loss of oil issues.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712175January 20, 2026
POWER TRAIN
Catastrophic engine failure of known defective L87 engine
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712198January 20, 2026
ENGINE
Engine has developed a serious lifter / cam issue. dealer identified it as a result of Displacement on Demand design. Total engine replacement recommended by dealer but since the mileage on that vehicle is over 100,000 warranty, the repair is not covered. Known issue, should have been pointed out by dealer / manufacturer before warranty expiration. FYI _ I do all repair work at dealer. Vehicle looses power intermittently is is not drivable at any distance. Manufacturing / design issue known over different versions of this engine since 2010, I believe.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712210January 20, 2026
POWER TRAIN, ENGINE
I had the truck inspected for recall N25249400 on August 11, 2025 with 24,610 miles. It passed the recall inspection and the dealer changed the oil to GM recall recommended oil. On January 18, 2026 with 28,275 miles, the engine seized while on a major highway. The truck lost all power and just turned off amd would not start or turn over. The vehicle was towed by the Police due to the vehicle being in a dangerous spot in the middle of a lane on the highway whi h I had to pay out of pocket. January 19, 2026, the GM dealer confirmed that the truck needs a new engine due to the recall defect. They said that they had just ordered a new engine, but does olnot know hpw long ot will take to get and then install. The dealer is unable to provide a rental vehicle which means, I can't WORK!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712226January 20, 2026
ENGINE
I have a 2023 GMC Delnali 1500 and the engine blew up 1-14-26 after the local CMC dealer 2 months ago done a check up recall from GMC that said they would do a test on the engine and cahnge the oil with a heavier weight oil that would solve the problem. After the dealer done the test and changed the oil to a heavier weight I was told all was good. Well 2 months later the engine blew up while I was driving down the road at 50 miles and the truck lost all propulsion. I had the truck towed to my house because noone knew what was wrong with it. I called the local dealer the next day and I had the truck towed to them. They checked the engine and said it blew apart and that GMC will replace the engine and also install a new radiator when all the parts are available. The dealership Laura Buick GMC and employees has been fantastic and have supplied me with a vehicle to drive till the repair is finished.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712235January 20, 2026
ENGINE
For the second time since I have owned the vehicle that was purchased brand new. The engine seized during driving on the highway and began making loud noises that was knocking and jerking the vehicle. The issue occurred initially around 15,000 miles and was diagnosed as lifter failure, was repaired and returned in July 2022. At 64,000 miles on January 15, 2026, while on an interstate the engine did the same thing and the vehicle went into limp mode. It has been diagnosed as lifter failure this second time and is awaiting appropriate repairs. Both incidents put myself in passengers at danger due to the nature in which the vehicle entered limp mode on the highway.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712236January 20, 2026
POWER TRAIN
1-At approximately 40,000 miles, my transmission was replaced under warranty. It had been failing since approximately 2000 miles having a very hard time shifting between first and second gear. It was finally replaced at 40,000 miles. 2- At approximately 45,000 miles I took my truck into the dealership for this latest recall on the 6.2 L failure for inspection. Vehicle is inspected and I was told I would need to have an engine replacement. I was told that there was no ETA on when a replacement engine would be available and that I would be contacted when one was. Afterwards I was sent back home in the truck they just inspected for potential engine failure and said had a bad engine. As of now, I’m still waiting on a word of a new engine and my truck is still operating, but leaves me concerned that it could fail at any moment while driving it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712266January 20, 2026
ENGINE
The engine has a knocking sound. I took it into the dealer and they replaced the exhaust system thinking that was the problem. However, the knocking still happens intermittently. I have video documentation of the noise.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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