GMC Sierra Complaints

15,732 consumer complaints on file.

#11693020October 13, 2025
UNKNOWN OR OTHER
OnStar module in-operable, bought the vehicle expecting the system to work as it is another safety feature in case of an accident. Technical support will not continue to respond when contacted. Will not assist with any technical support to diagnose issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11693050October 13, 2025
UNKNOWN OR OTHER
Noticed the bed of my truck was touching the cab when looking under truck the frame is total structural failure rusted all the way threw on the driver side and beyond
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11693130October 13, 2025
ENGINE
Lifter and camshaft failed
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11693164October 13, 2025
POWER TRAIN
The vehicle has a vibration and stuttering feel during highway driving. Cruise between 70-75 has off and on again vibration is seat, steering wheel, and center console. The issue feels more pronounced between 60-65 and exhibits more of a hum, much like a washing machine drum that is out of balance. I have had the truck at 2 different dealerships and they have insisted it was a whee balance issue. I have also had the truck balanced at Costco. None of these issues have been alleviated with wheel balance. The dealership, where the truck was purchased, refused to test the truck at highway speeds and would only drive it for a short period at speeds up to 55mph. I have also reached out to GMC customer service, and they simply regurgitated what the dealer indicated about balance and testing at 55 mph or less in town. There seems to be a number of TSBs out on this issue. Most related to torque converter issues, but none of the dealers have indicated that my truck is impacted by any of the current TSBs, even though it exhibits all the symptoms. Not sure of the safety replications, but I am disappointed in the fact that the truck has had this issue since around 1,000 miles, and it seems like the dealer service departments are just ignoring it and refusing to do a thorough evaluation of the issue unless a code triggers or until a major failure occurs
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11692637October 11, 2025
UNKNOWN OR OTHER
My OnStar module failed after 2 years, causing my check engine light to illuminate. The replacement has been unavailable for a year due to the large number of consumers fighting for a limited supply of replacement parts. This has placed myself and my passengers at undo risk as my ability to access the key safety features associated with OnStar, including but not limited to: crash detection, emergency notifications, and location assistance. This problem was first diagnosed at Bristol Chevrolet and then later inspected and confirmed at Crabtree GMC.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11692498October 10, 2025
ENGINE
I have a loss of power in the motor with engine codes diagnosed by the dealership of P0016, P0017. These are the same codes and symptoms that are included in the 2021 through 2024L 87 6.2 L motor recall. My motor is a 2019 edition but having the exact same issues. I know these are the same motors and is having the same issue. started having loss of power in May 2024 with engine codes coming in September 2025.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11692524October 10, 2025
ENGINE
Vehicle showing signs of a failing coolant flow control valve and/orcoolant temperature sensor. - AC takes a long time to cool down - Engine fan will stay on after the vehicle is shut off - I often see the notice of “A/C Off Due To High Engine Temp” From what I can find, this issue I’m experiencing is a known point of failure in this vehicle make/model/year. On 10/10/2025, I took the vehicle to Fountain Buick GMC Service in Orlando, FL. The service manager recognized the symptoms immediately, and even knew right away that the part to fix it was on back order - further bolstering that it is an issue that GM is aware of and deals with regularly. Per the service manager, GM’s initial response was to issue a “pay to play” software update that is covered under the 3yr/36,000 warranty, but not the 5yr/100K. Out of warranty, this “solution” costs $499.99, and has a < 10% degree of success. If the update doesn’t fix the issue, then it would be covered. However, the need for the software update was not communicated to consumers. Regardless, since the issue is not yet severe enough to be recognized via code (despite symptoms, pictures, and video), GM will not take any action under warranty towards fixing it at this time. The vehicle’s 5yr/100K warranty expires on 10/15/2025. If the code throws on 10/16/2025, it will not be covered under warranty, but *may* be covered under dealer assistance. And regardless, the $499.99 charge will apply, independent of warranty coverage. More important than the money is the safety. The engine’s temperature is not being regulated, the symptoms I’m experiencing are terminal, and this issue will not be fixed on its own.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11692306October 9, 2025
TIRES:TREAD/BELT, TIRES
DRIVING THE SPEED LIMIT OF 55 ON A PAVED ROAD, NO WEATHER CONDITIONS AND THE REAR DRIVER SIDE TIRE EXPLODED. WHEN THIS HAPPENED THE TRUCK SLID ACROSS THE ROAD INTO THE OTHER LANE. LUCKILY NO ONE WAS COMING IN THE OTHER LANE AND I WAS ABLE TO GET THE TRUCK UNDER CONTROL. THE TIRE WAS FINE, TIRE PRESSURE WAS CORRECT BUT THE ENTIRE TREAD OF THE TIRE FLEW/BLEW OFF AND CAUSED EXTREME DAMAGE TO THE REAR DRIVER SIDE TIRE WHEEL WELL AND BACK BODY PANEL OF THE TRUCK. THE TIRE IS STILL FULL OF AIR AT THE CORRECT PRESSURE TO THIS DAY. THE TIRE SIZE IS LT 275/70 R 18 125/122 R LOAD RANGE E
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11692321October 9, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2018 GMC Sierra 1500. The contact stated that while attempting to accelerate from a stoplight, the vehicle hesitated before accelerating. A day later, the failure reoccurred, and the RPMs increased before the vehicle accelerated. There were no warning lights illuminated. The vehicle was taken to the dealer, who diagnosed that the connecting rod had failed, and there were metal shavings inside the engine. The contact was informed that the engine needed to be replaced. The contact related the failure to NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the VIN was not included. The vehicle was not repaired. The manufacturer was informed of the failure and confirmed that there was no recall on the VIN. The manufacturer opened a case for the failure. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 169,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11692464October 9, 2025
ENGINE
Truck was in park idling and it started to run really rough so I turned it off. Wouldn’t start again. Now it needs a new motor.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11692468October 9, 2025
ELECTRICAL SYSTEM, BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
My truck has a blue screen that appears randomly on occasion that states service rear view system. This is a major safety concern. And after reading online it is a very common occurrence on 2019-2025 gm pickups. It needs to be recalled and a for sure fix done to prevent from backing into someone or something. I have small children and my biggest fear is running them over while playing in the yard and I rely very much on my rear view/360 camera to make sure this doesn’t happen even after double and triple checking they are no where near danger before stepping in my vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11692234October 8, 2025
POWER TRAIN
Transmission on my vehicle has failed three times since I bought the vehicle in October of 2021. Vehicle currently has 39,000 miles. First transmission issue was resolved by the dealership by replacing the transmission valve body. This solved the problem for approximately 12,000 miles. In September of 2025 with 39,000 miles the transmission suffered a catastrophic breakdown which lead to complete transmission replacement. After being “fix” the vehicle suffered another catastrophic transmission failure within 400 miles of the complete transmission replacement. This incident caused the vehicle to shut completely down and I was stuck in the traffic lane of the US Highway. Fortunately my vehicle and I were not struck while waiting 30 minutes for a tow truck. Presently the vehicle is back at the dealership awaiting repair. From my review of available on-line information it appears there are 10’’s of thousands of GMC Sierra pickups with major transmission issues. This needed to be addressed before someone is killed due to the poor quality of these GMC trucks.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11691992October 8, 2025
ENGINE
the engine seized at 65mph. available for inspection. was left stranded in a limited access area with no cell service. there was no warning, the engine just stopped at highway speed and would not restart. the problem was confirmed by an independent service center. they couldnt identify which component had failed without a costly teardown. occurred at 112,000 miles, past the 100,000 mile powertrain warranty.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11692084October 8, 2025
SERVICE BRAKES
2021 GMC Sierra 2500HD 6.6L gas 6 speed automatic transmission W/4wd After a brake service job the vehicle will randomly kick on the traction control/ABS and the right front brake will lock up. The steering wheel jerk is violent enough to remove the wheel from the drivers hands. No Traction control or ABS lights flash on the dash when this occurs and it has caused the vehicle to veer into oncoming traffic and also off the road. The dealer was unable to recreate the issue nor are there any stored codes/issues found when having the truck diagnosed. ABS and speed sensor wires have been reviewed and none were damaged during the brake job. All wheel speed sensors are functional and reading when the issue happens. This issue happens during dry or wet conditions and is random without warning.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11692152October 8, 2025
EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI, EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM)
See attached document for complaint.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11691802October 7, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2021 GMC Sierra 1500. While the contact's husband was driving at an undisclosed speed, the contact noticed an abnormally bumpy ride. The contact felt as if the vehicle was driving over rocks. The check engine warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, parts were not yet available for the recall repair. In addition, the contact stated that the vehicle had been at the dealer for more than two months awaiting parts. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 80,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11691862October 7, 2025
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
I took my truck through a car wash and then parked at my parents house. While the vehicle was parked, the trunk latch kept releasing. The trunk popped open. I left it open but you could hear the latch continually releasing and the lights blinking. This went on for an hour and I was unable to drive home because my trunk kept unlatching! A recall was released for other Sierras but not mine. Please investigate my vin and others that may be affected.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11691910October 7, 2025
AIR BAGS
The contact owns a 2008 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 21V050000 (Air Bags). The local dealer was contacted and informed the contact about the disclaimer about the dashboard possibly being damaged. The dealer informed the contact that there were no loaner vehicles, but then called back and offered a loaner. The manufacturer was contacted and filed a clai,m and referred the contact to another local dealer. The contact called the other local dealer, Ferman Chevrolet of Tarpon Springs (43520 US Hwy 19 N, Tarpon Springs, FL 34689), who confirmed there was a disclaimer related to the recall repair. The contact had not experienced a failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11691912October 7, 2025
UNKNOWN OR OTHER
MY BACK WINDOW HAS HAD A LEAK IN IT FOR SOMETIME NOW. I TAKEN IT TO A DEALER THEY SAID THEY HAVE HAD OTHERS WITH THE SAME PROBLEM. BUT THE WARRENTY WON'T COVER IT .I ALWAYS BUY BUMPTER TO BUMPTER SO I DON'THAVE TO WORRY ABOUT THINGS LIKE THIS.IT IS RUINING MY INTERIOR.CAN WE PLEASE GET SOMETHING DONE ABOUT THIS ISSUE.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11691951October 7, 2025
ENGINE
We were towing a fifth wheel camper with our truck on an interstate highway in Pennsylvania when our serpentine belt burst suddenly and without warning. Our truck is a 2025 model with only 10,000 miles driven. We lost all power steering and power brakes of both the truck and the camper and the motor shut off while we were driving at 65 mph. My husband struggled to gain control of the truck and camper which was severely fishtailing and was eventually able to get over to the shoulder and stop the vehicles. We were towed to a GMC dealership where a factory technician happened to be on site providing an in-service for the dealership's service team. He inspected our truck and we were told that he said that GMC is aware of catastrophic failures in these serpentine belts. We were also told that he took photos and was sending a report to the GMC factory regarding our situation. When the serpentine belt blew, it damaged fan blades, shroud, oxygen sensors and our air conditioner belt (which fell off 200 miles later). We had absolutely no warning of the sudden catastrophic failure of the serpentine belt and came close to losing our lives. Our biggest concern is that the serpentine belt was replaced with the exact same model of belt that failed. What does it take for a company to recall a known defective belt? A fatality? We were very fortunate to have walked away without injury or losing our lives. We have written a letter to GMC but they have not contacted us as of yet.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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