GMC Sierra Complaints (2023)

567 consumer complaints on file.

#11722763March 8, 2026
STRUCTURE:BODY
I was driving down the road and my top grille molding flew off
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11722475March 6, 2026
FUEL/PROPULSION SYSTEM
Getting off on highway and when I got to the light the truck stuttered and shut off. will not turn back on. when I try to start it it stutters and will not turn on
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11721392March 2, 2026
ENGINE
P1098 code for coolant control valve malfunction causing a radiator leak. Should be covered under warranty, but Wyatt Johnson in Clarksville Tennessee giving me the complete run around trying to get me to pay $3500 for a radiator replacement.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11721163February 28, 2026
ENGINE, POWER TRAIN
While traveling on a major Route, the truck just turned off while driving. The truck was stuck in the middle of a two lane major route. Truck would not start or turn on. I was unable to put hazards on or put the truck in neutral. The engine siezed due to the GM recall. After having the engine replaced by a certified GM dealership, a few days later the Throttle body stopped working. Again, keeping me stuck. Certified GM dealership had to replace the throttle body.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720968February 27, 2026
ENGINE, FUEL/PROPULSION SYSTEM
Driving along a main road at 40-45 MPH and coasting toward a traffic light, the engine stalled out. Traffic light turned green and the vehicle would not accelerate. There were no warnings, check engine lights, or sounds. I could not pull to the shoulder due to traffic and had to pull into a left hand turn lane. The truck would not restart. Electrical systems seemed fine. Engine would turn over but not start on multiple attempts. One attempt finally got it to start but it immediately stalled. I was stuck in a dangerous situation at a busy intersection and no way to move the vehicle. It has been towed to the dealership.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11721008February 27, 2026
FUEL/PROPULSION SYSTEM, ENGINE, ELECTRICAL SYSTEM
On Saturday at approximately 5:30 p.m., while driving on a two-lane city street with vehicles around me, my GMC Sierra began malfunctioning. The gauges flickered, warning lights appeared, and a transmission warning activated. As I attempted to safely pull over, the vehicle began stuttering and then completely stalled in the middle of traffic. Cars swerved and honked to avoid hitting me. Fortunately, no collision occurred, but the situation was extremely dangerous and frightening. AAA towed the vehicle to the GMC dealership. When I informed them of the incident, I received a text asking whether an over-the-air update had been performed prior to the stall. I confirmed the vehicle had received an update within the past three months. I was then told there is a bulletin stating that after an over-the-air update, the vehicle may suddenly lose communication with multiple modules and stall. The foreman indicated this was likely the cause and that they were consulting Technical Assistance. I asked when it is considered safe to drive a GMC vehicle following an update, as I was never warned that the vehicle could suddenly lose power and stall without notice. I was told they were investigating further. Yesterday, I was informed that engineering directed them to replace the ECM (Engine Control Module) and the Fuel Pump Control Module, with the ECM expected to arrive next Wednesday. I have not been given a confirmed timeline for completion. This appears to be a serious and known issue within GMC, yet there has been no recall and no warning provided to consumers. I was unknowingly driving a vehicle susceptible to sudden and complete power loss. This failure placed my life, my family, and the safety of others at significant risk.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720633February 26, 2026
ENGINE
Motor seized while driving
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720375February 25, 2026
UNKNOWN OR OTHER
At approximately 29,000 miles, my 2023 GMC Sierra 1500 experienced a transmission failure. The transmission began slipping, shifting improperly, and operating unpredictably during normal driving conditions. This occurred without warning and well below the expected lifespan of a transmission, indicating a serious defect rather than normal wear or maintenance-related issues. The vehicle became unreliable and unsafe to operate, particularly during acceleration and highway driving, where delayed or improper shifting created a potential safety hazard. I relied on this vehicle for daily transportation and work, and the worsening transmission condition made continued operation unsafe and impractical. I later became aware that transmission failures are a widespread and documented issue affecting this model year GMC Sierra 1500, suggesting a possible manufacturing or design defect. Due to the severity and premature nature of this transmission failure, I was forced to return the vehicle early. General Motors is now charging me a balance of over $10,000 related to the early lease termination, which was directly caused by this defective transmission and not by customer misuse or negligence. My requested resolution is for General Motors to waive the full balance of over $10,000, as this financial obligation resulted solely from a premature transmission failure caused by a defect outside of my control.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720376February 25, 2026
STRUCTURE:BODY
While driving on the interstate the top part of the grill flew off into following traffic.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720507February 25, 2026
POWER TRAIN
While driving the vehicle I received dash warnings of temperature rise. Pulled over and saw a large coolant leak coming from right side of engine compartment. Towed to dealership. Dealership informed me that coolant hose coming from heater core was routed by the manufacturer so that it rubbed on the frame. Dealer indicated problem persists on all vehicles and no given, other than replacing the hose and not remedy the problem. New hose will be in contact with frame again, causing inevitable where and breakage. Dealer did not cover under warranty nor did they offer solution for repair other than replacing those hose.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720554February 25, 2026
ENGINE
Vehicle exhibited a sudden loss of power, dash screen stated a restart of the vehicle was needed. I was able to coast into a neighborhood upon attempting to restart the vehicle nothing would happen and it would not even attempt to turn over, proceeded to contact onstar for roadside assistance, vehicle taken to nearest GMC dealership where it was determined to have engine failure and a new engine under warranty will be installed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720207February 24, 2026
POWER TRAIN
August of 2025 [XXX] purchased a certified GMC Sierra 3500. The truck had been traded in May and sat in their service department waiting on a valve body. At this point, we knew this. [XXX] had done research on it, and felt confident in being told the valve body was completely replaced and now working…. Worst mistake we’ve made in a long time. It was not replaced, that was only the beginning of the lies. [XXX] then drove the truck across the country for work, not knowing how much of a hazzard it was. Shortly after arriving there he quickly realized the truck was still having transmission problems. We brushed it off, these things happen. Fast forward when he came home in September/October he took the truck to the Rice Buick GMC service department. Where he was supposed to “wait” on his appointment. Only to call me hours later, they clearly weren’t going to be done that day. We left not knowing that it would be nearly a month until we could drive the truck again. In the midst of that they never offered any help, a rental or anything. When I asked, they offered a tiny small car next door at enterprise. I clearly did not agree, we just spent a lot of money on a heavy duty truck for a reason. It took multiple phone calls to multiple supervisors for them to agree to let him rent a truck. Because you know they might have to spend an extra penny or something (que the eye roll). In that month of having the truck the communication was little to non existent. They never answered the phone, called back, heck most of the time the text messages weren’t even replied to. It once again took me getting a little bit ridiculous for an answer - the truck was “fixed”. When I picked up the truck I spoke to the the service manager, and he of course tried to play me like I was some dumb women who had no idea what I was talking about. He dismissed all of my concerns, acted like having a truck for a month was normal. (More attached in photos) 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
#11719989February 23, 2026
ENGINE
After 5000 miles between oil changes, the engine had burned enough oil to have no oil in the dipstick. This equals at least 3 quarts oil if a 7 quart capacity. The dealership states this truck burns a quart to quart and a half every 2000 miles. This seems like an excess amount of oil consumption.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11719403February 20, 2026
POWER TRAIN
The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving in 1st and 2nd gear, the transmission was slipping, causing the vehicle to jerk. There was no warning light illuminated. The vehicle was taken to the dealer, who determined that the valve body needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The failure mileage was approximately 97,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718939February 18, 2026
ENGINE, FUEL/PROPULSION SYSTEM, UNKNOWN OR OTHER
Engine lost all power while I was attempting to make a left turn at a very busy intersection. Dash kept saying “check battery”, jump pack did nothing. Engine wouldn’t start.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718685February 18, 2026
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING, LANE DEPARTURE: ASSIST
Onstar module stopped working
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718612February 17, 2026
ENGINE, UNKNOWN OR OTHER
This vehicle since early inception of ownership has been brought to the dealer for failure to start, oil consumption and the vehicle stopping suddenly on it's own. There have been 13 service calls and each time the vehicle has been brought to dealer for the problem at hand shortly after that the vehicle was brought back again for the same issue and eventually escalating into other severe problems. The vehicle is unsafe to drive because it suddenly stops without warning, oil is being burned and needs replacement more often than it should. The vehicle recently had to be towed because it stopped and could not be started. The manufacturer claims that there is nothing wrong with this truck. However, this was disputed by a second dealer that examined the vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717754February 13, 2026
ELECTRICAL SYSTEM, ENGINE, POWER TRAIN
The vehicle has experienced repeated incidents of sudden reduced engine power and loss of acceleration while driving. On multiple occasions, while traveling at highway speeds, the vehicle failed to respond normally to throttle input and would not accelerate as commanded and loss of power steering making it difficult to turn the steering wheel and apply brakes. One incident resulted in throwing my truck off the road and luckily we nearly avoided a multi car collision and potential pile with my wife, 8yr old daughter and newborn son in the vehicle at high speeds up to 60/70+ mph but despite avoiding a major life threatening accident to us and other drivers, resulted in striking objects, glass and debris on the side of the road causing damage to my vehicle and then sliding to a complete stop in the ditch off the highway. This creates a hazardous driving situation, particularly when merging into traffic or attempting to maintain speed with surrounding vehicles, increasing the risk of collision. The malfunction appears related to the engine, electrical system, and powertrain. During at least one dealership visit, the reduced power condition was recreated and confirmed by service personnel. However, despite multiple warranty repair attempts, the issue continues to reoccur intermittently. Warning messages have appeared at times, including reduced engine power notifications and check engine indicators, though the condition has also occurred without advance warning. The intermittent nature of the defect makes it unpredictable and unsafe. The vehicle has been out of service for more than 30 cumulative days for warranty-related defect repairs related to this and other electrical issues. Multiple repair attempts have not permanently corrected the condition. The vehicle remains available for inspection upon request. Due to the unpredictable loss of acceleration and prior safety incidents, there are ongoing concerns regarding safe operation of the vehicle.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11717196February 11, 2026
STRUCTURE:BODY
While driving on Interstate 10 at 70 mph the upper section of the front grille broke off. After the part broke off it contacted my windshield before continuing to fly off behind him. Not only putting me in danger but also anyone traveling behind me. From online research the is a recall for this truck except the 2022 models after the same thing happening.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717110February 10, 2026
POWER TRAIN
Drastically reduced power on highway resulting in reduced acceleration due to code P0198 engine coolant control valve position sensor. Required me to drive at reduced speed on highway to get to dealer. Safety issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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