GMC Sierra Complaints

15,732 consumer complaints on file.

#11649531March 20, 2025
STEERING
The contact owns a 2020 GMC Sierra 2500. The contact stated that while driving at various speeds, the steering wheel was pulling to the left unintentionally. Additionally, the contact stated that there was significant play in the steering wheel. The contact stated that while driving 35-40 MPH and driving through a puddle of water, the vehicle veered violently at a 60-degree angle into the left lane while the contact was firmly grabbing the steering wheel, nearly causing a crash. The vehicle was taken to the dealer and was diagnosed with upper steering shaft failure. The contact was informed that the upper steering shaft needed to be replaced. The part was replaced. Additionally, the vehicle was taken to a Tire Shop, where the tires were replaced and alignment was performed. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 31,800.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11649567March 20, 2025
ENGINE
Was driving down the interstate at 70mph with cruise control on. The vehicle lunged forward and soon after a reduce power message appeared in the messages. I was able to avoid any incident with other vehicles and exited the highway with the motor was making loud noises. I parked the vehicle and called for roadside assistance. The vehicle had to be towed to the dealer, and I found out that the 6.2 liter V8 motor has metal in the oil and the entire engine needed to be replaced. The thrust bearing failed and required a full engine replacement. The vehicle has approximately 21,000 on it and is still under warranty, but it is a 3-6 month wait to get a replacement engine. I have searched the internet and found that there are many vehicles that are having similar issues with the 6.2 L V8 GM motor. It has been slightly over a month since the incident and have not received any updates.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11649580March 20, 2025
POWER TRAIN
I suddenly lost all power in my pickup. I'd try to accelerate and it would just lag and then all of a sudden it would gain power and take off. It wouldn't shift gears and I could not go over 30 mph, as it was running at about 2-3000 rpm. Once I was in a safe spot to stop, it would not shift into manual or reverse.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11649584March 20, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving 70 MPH, the vehicle lost motive power. The check engine warning light illuminated after the failure had occurred. The vehicle was towed to the dealer, who determined that the engine had seized and needed to be replaced. The vehicle was not repaired. The contact related to the failure to NHTSA Action Number: PE25001 (Engine and Engine Cooling). The manufacturer was not made aware of the failure. The failure mileage was approximately 23,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11649586March 20, 2025
ENGINE
While driving our 2020 Sierra AT4 down the highway at 65 mph, the engine suddenly cut out and started sputtering. Every light came on. We pulled off the highway and had the truck towed. Our highly trusted, family mechanic company diagnosed lifter 5 was twisted and stuck, along with another stuck lifter. The cost to replace the engine was one hundred dollars more than repairing the two lifters. They purchased a new engine through Van Chevrolet and were surprised the cost had recently decreased from $7-8k to $3900, to purchase a rebuilt engine. The engine appeared to be new, with the bolt threads unused. The new engine comes with a 3year 100k mile warranty through the dealership. We called GM, they said since we went to another mechanic they would not speak with us.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11649194March 19, 2025
ELECTRICAL SYSTEM
The truck check engine lights came on, and I took it to a dealer. I was told the ECM was faulty, they replaced it, but it didn't fix the issue. I was then told the ONSTAR telematics unit was faulty. The truck has been down for 45 days, with no ETA on parts(several forms say 4-6 months). There is no guarantee that this will fix the CEL. The truck is inoperable at this time.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11649197March 19, 2025
STRUCTURE:BODY
We have a 2014 GMC sierra 4.3 V6 6 speed automatic.. with only 100k miles and the frame is rusted and cracked rear shocks mounts are rusted and broke and the leaf spring mounts are rusted and they broke.. this should be a recall issue..
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11649330March 19, 2025
ENGINE AND ENGINE COOLING, ENGINE, ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS
The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving 60 MPH, there was an abnormal knocking sound coming from the engine compartment, after which the vehicle lost motive power. The contact was able to pull over to the shoulder of the roadway, where the vehicle failed to restart. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who determined that the engine had seized. The contact was also informed that the fuse box needed to be replaced. The vehicle was repaired, but the failure reoccurred. After investigating the failure, the contact related the failure to NHTSA Action Number: PE25001 (Engine, Engine and Engine Cooling). The manufacturer was not notified of the failure. The failure mileage was 63,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11649347March 19, 2025
POWER TRAIN
Truck started to lose power or slip on quick acceleration on highway Truck would jolt or shudder. 63000 miles. Dealer diagnosed truck needs Torque converter and a valve body replacement. No warning lights Contacted GM. Have a case number, was told to take to dealer. It’s at dealer now, getting repaired. I’m wondering if GM has a bigger problem with transmission recall
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11649361March 19, 2025
ENGINE
While driving on a 55 mp road [XXX] the truck just stopped running. I had just turned from [XXX] onto [XXX] and had not gotten up to speed. I was only traveling at about 25 mph when the truck seized and stopped. No power to control vehicle. No power and no warning prior to no power. Only 18k miles on the truck and it died and wouldn't restart. It sat in the middle of the road and stayed in the middle of the road for an hour waiting on a tow. 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
#11648908March 18, 2025
POWER TRAIN
The transmission on this vehicle has given me problems. I have had the vehicle in a certified garage many times with complaints of a hard shifting transmission. First Chevrolet told me “it’s normal” but there is nothing normal about jerking so hard it throws a drink from a cup holder. Then I was told I needed a transmission wash. That was about $500 for it to “fix” the problem. Chevrolet told me the transmission was may or may not work and it may only be temporary. In my case it has reduced the hard shifting transmission but it’s still obvious. Now when I drive I remove my foot from the accelerator when it shifts from 1st to 2nd. I also make sure to keep a spill proof lid on my coffee because I never know when the transmission may throw it out of the cup holder.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648923March 18, 2025
STRUCTURE:BODY
The Vader Chrome on the front of vehicle is peeling. This includes the grille and surrounding areas. This area has been inspected by a representative at GMC and at a dealership. GMC refuses to stand by their product.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648931March 18, 2025
POWER TRAIN
See attached document for complaint.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648932March 18, 2025
ENGINE
Driving as normal when loss of power occurred due to engine failure (rod issue) Investigation # (PE25001)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648942March 18, 2025
POWER TRAIN
03/08/2025 While at Interstate speed engine turned off as did the entire vehicle electrical system in the truck. Steering control was maintained (though not power assisted) and brake control was in the same position. Truck was brought to a safe position in the breakdown lane and a re start was attempted to find that engine would not rotate and a number of dash indications were displayed including check engine. No indication of low oil pressure light nor any other warning was displayed prior engine shutdown event were noted. Truck was taken to an independent repair center for evaluation. Initial inspection noted that engine would neither turn via electric starter nor by manual rotation of crank shaft with a socket and breaker bar. Truck may be inspected near owners residence. Safety risk was low due to the low traffic condition of the interstate travelled at the time.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648953March 18, 2025
POWER TRAIN
Vehicle sluggish upon acceleration. Transmission downshifts unexpectedly. Vehicle continues to rev bounce at steady acceleration and when driving at speed without acceleration.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648979March 18, 2025
ENGINE, POWER TRAIN
After 2 years of owning the vehicle, after every oil change, it would indicate low oil just before an oil change causing for us to add an additional a quart of oil to keep it running smoothly. We informed the service technician of the situation on multiple occasions and no further inspection was completed, and just an oil change was serviced. After a few months we noticed the engine was running rough and a white smoke coming out of the exhaust on acceleration then the check engine light came on. We brought the car to get tires replaced and to service the check engine light, the technician stated that the check engine light a failure in the catalytic converter. We brought the vehicle to the local GMC service center, where they indicated that the we required a replacement engine because of catastrophic engine failure. We reported that the check engine light was due to catalytic converter failure. The service technician ensured that the priority was the replacement of the full engine not indicating what was the main cause of engine failure stating that the catalytic converter could have led to the failure of the engine as well. We replaced the engine, and after 3 months of vehicle being in the shop the engine was replaced. Three days after receiving the vehicle, a check engine light came on. We did not drive the vehicle until we had to return it back to the service center. The service technician stated that it is due to a lack of communication from the engine to the ECU. The technician called the following Monday stating that the check engine light was due the catalytic converter. We told the technician that was the primary reason that the customer the vehicle in the first place. We asked if there was an alternative to replacing the catalytic converter since we already paid 12k for the engine replacement. We asked if they had taken apart the catalytic converter to confirm its not a sensor issue. They replied that the codes indicates its the whole converter.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648985March 18, 2025
UNKNOWN OR OTHER, POWER TRAIN
ODI # 11646185 My truck on [XXX] leaked transmission coolant from the jumper line leak( which this part is recalled but not for my VIN #) $400.61 dollars and left me stranded in the middle of the highway and had to be towed. After the repair and checking the transmission was discovered it was ruined because of the leak. So now I have to have a new transmission installed at Jennings in Beardstown IL to the cost of $7363.39. 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
#11648989March 18, 2025
SERVICE BRAKES, WHEELS, STEERING
I WAS SOLD AN UNSAFE VEHICLE FOR WORK/COMUTE FAMILY. THE DEALERSHIP MISLEAD ME AND LIED TO ME ABOUT WARRANTY AND EVEN AFTER I PAID $10,0000 CASH I WAS WRONGFULLY DONE BY THIS BUSSINESS BY NO MEANS WAS THE BUSSINESS TRYING TO CONDUCT GOOD BUSSINESS WITH ME AND I ALSO HAVE A DISSABILITY AND A CHILD WITH A DISABILITY. Incident Date: 5/9/2024 Description: I PURCHASED A 2006 GMC SIERRA $10,000 CASH WAS GIVEN AND PAID OFF BUT I WAS SCAMMED BY THE DEALERSHIP. I BOUGHT THIS VEHICLE UNDER THE IMPRESSION THAT I WAS BEING SOLD A GOOD SAFE VEHICLE FOR WORK AND MY FAMILIES NEEDS ARE ALSO A PRIORITY. I NEVER TEST DROVE THE VEHICLE TILL I DROVE HOME AFTER PURCHASING IT. NOT EVEN 4 MINS ON THE ROAD AND I NOTICED THE ABS LIGHT CAME ON THE DASHBOARD WITH THE BRAKE LIGHT AND THE FRONT BRAKES BEGAN TO SMOKE. I CONTACTED THE DEALSHIP BUT WAS DISREGARDED AND NOT OFFERED AN EXCHANGE OR ANY TYPE OF SOLUTION FOR MY PROBLEM I EVEN EXPLAINED MY JOB REQUIRED ME TO USE MY VEHICLE FOR TRANSPORTING MATERIAL FOR WORK AND SINCE I WAS IN CHARGE OF 4 PEOPLE THAT WOUL BE REQUIREING SKILLS FOR CUSTOMER SERVICE AND MAKING SURE ALL CUSTOMERS WERE SATISFIED. PACIFI NORTHWEST MOTORSPORTS TOOK ADVANTAGE OF MY IMPARIMENT I FEELSCAMMED AND I WANT TO HAVE MY MONEY BACK OR AT LEAST EXCHANGE FOR THE VALUE OF $10,000. I WAS NEVER OFFERED ANY TYPE OF SLOUTION FROM THE BUSSINESS THE OWNER LAUGHED AT ME AND SAID THAT IT SUCKED TO BE ME AND HUNG UP THE PHONE ON ME. THE BUSSINNESS OWNER LIED TO THE ATTORNEY GENERALS OFFICE ABOUT OFFEREING ME A REMEDY THE ONLY REMEDY I WOULD CONSIDER IS MY MONEY BACK AND AN EXCHANGE FOR MY TROUBLES I feel that this is a vehicle manufacturer malfuncunctiom. I'm still having the sa,e problem with my brakes .. please help I have tried repairing the problem, numerous times to be unsuccessful .
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11649000March 18, 2025
POWER TRAIN, ELECTRICAL SYSTEM
While entering the highway from a downward slop exit ramp and towing a trailer, my truck shuddered hard and briefly locked up the rear axle. It immediately went into limp mode with a message that driving speed will be reduced. It also wouldn't shift past 5th gear. When the event took place, the OBD2 generated over 20 trouble codes. My local dealer advised I could drive it to them for repair. Upon dropping it off, they now advise it's NOT safe for driving and they have no eta on the parts to repair the issue. It's now been at the dealer for a week with no update. This is a well known issue that GM refuses to repair or provide a reasonable timeframe for repair. There are countless videos such as this one that show what happens when this takes place. [XXX] [XXX] 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

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