GMC Sierra Complaints (2023)

567 consumer complaints on file.

#11655217April 17, 2025
POWER TRAIN, ELECTRICAL SYSTEM
Shift to park message displayed while attempting to shut off engine after shifter was in the park position, accessory would not turn off even after driver door opened and could not leave vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11655245April 17, 2025
ENGINE
Engine failed and it is available for inspection upon request The engine started coasting down a major highway and it put myself and others on the road at risk. The dealer has confirmed that this 6.2 L engine has been giving the dealership problems with these GMCs. The vehicle has only been inspected by the Dealership. The Warning Message stated that I needed to restart the engine; however, you can't do that on a major highway due to pressing the break. The vehicle was already on; however, the engine was not connected. No other symptoms were happening prior to the incident. The engine trouble appears only at this incident.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11655076April 16, 2025
ELECTRICAL SYSTEM
Tailgate opened while in park.closed garage door.Came back out to leave and garage door got caught on tailgate that had released open on its own causing body damage.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11655130April 16, 2025
ENGINE
Was going up a hill and all of the sudden the engine stopped, the truck coasted to the edge of the road. A message came on saying 'Press start to reset engine.' Doing so did nothing. The truck ended up having to be towed to a dealer. They were not able to turn the engine over by hand and ended up diagnosing the engine as a seized from a failed bearing. They ended up replacing the entire engine with a new identical one. They have not been able to tell me if the new engine is in the same engine group that I could experience the same thing a second time.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11654653April 15, 2025
ENGINE
While towing my boat to the Florida Keys, I encountered a series of mechanical issues on Interstate 75. The engine’s exhaust became excessively loud, causing the engine to abruptly shut off. Despite successfully maneuvering into the safety lane, I was unable to restart the engine. I promptly contacted the dealership, which dispatched a tow truck to my location. However, the tow truck driver was unable to put the vehicle in neutral gear. Subsequently, I reached out to GMC, which informed me that the tow truck required a flatbed for transportation. I waited another two hours for a flatbed truck to tow the vehicle to the dealership. A few days later, I received notification that my engine had seized, necessitating an engine replacement. The dealership informed me that the 6.2-liter engine was experiencing a national backorder. I had purchased this used vehicle less than a month prior and had not yet made my initial payment. Consequently, I find myself without a vehicle. The dealership has been unable to provide an accurate timeline for the repair to be completed.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11654332April 13, 2025
ENGINE
Complete engine failure while driving at highway speeds which put me and my family in dangerous risk of injury or death. The dealer confirmed the engine failure and needs engine replacement. The engine failed with no warning which only had 8700 miles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11654259April 12, 2025
POWER TRAIN
Transmission locking up Was never notified about recall and my truck was never put on recall list they have gas lighted me and others with 23 models having same known issues Yes it is stuck at the dealer waiting on back ordered part but they arent aloud to inspect the gears in the transmission due to only replacing the control module Prior to this i had other failures between fuel control module to def fluid tank to shortened wire harness all of this issues make the vehicle go crazy between acceleration/ hard and no shifting which is a danger to drive and then there will be more wear and tear on other components that arent being addressed
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11653806April 10, 2025
ENGINE
4-5-25 Going 65 mph truck shut off for no reason. Dash message stated “press button to restart” I managed to pull over on side of road and place in park and restarted. Drove home and Chevy dealer service was closed. 4-7-25 Called in morning to get truck into service. 4-8-25 Service advisor called and stated No dash lights no codes . I explained that it was scary to have truck shutoff with no reason.i also stated that truck lurches and auto stop sounds wierd. Dealership Said tech was going to investigate further. I got a call next day 4-9-25 Service advisor said the main bearings bad and tech recreated problem and that motor was blown and need to order new from Michigan . Service advisor said he ordered engine and that it was known issue and covered under warranty. I asked how long he would have truck and he stated NO ETA. Truck engine seized during tech driving to reproduce my issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11653960April 10, 2025
POWER TRAIN
The contact owns a 2023 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the “Service Transmission Now” warning light illuminated. Additionally, the contact stated that the warning light and a message indicated that the transmission would stop shifting soon. The vehicle was taken to the dealer; however, the vehicle was not inspected. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 31,230.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11653561April 8, 2025
ENGINE
Turned onto highway. Got up to about 60 miles per hour. After a couple minutes the truck lost all power. Was pressing gas and noticed speed declining. Looked at dash and noticed rpm decreasing. All lights were off in the dash. I let the truck coast to the edge of the highway. Attempted to jump start and replace battery and nothing happened. Had it towed to a mechanic who said the motor was seized up.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11653214April 7, 2025
UNKNOWN OR OTHER, STRUCTURE:BODY
The electronic tailgate randomly opens on it's own/fails and opens when it has not been pushed to open. The vehicle is available for inspection. The tailgate opens randomly and can be unknown that it is open. No warning of it at all. It has happened multiple times, the most recent being today 4/7/2025. I know that a recall has happened with other models for this exact same issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11653215April 7, 2025
POWER TRAIN, ENGINE
My wife and I were traveling westbound on [XXX] just outside of Durkee Oregon, when while going up a hill with Cruse set to 72, the truck began to slow down drastically. When I looked down I was then going 60 and showing down fast. I was able to get to the side of the road and then the truck stopped, it shut off. At that point the truck has not be back on. It would not turn on and Onstar reported that there is an issue with the Engine and transmission. No warning lights came on until we stopped. Then the Engine light was on and the truck said that it was overheating but the oil temps were normal. I feel lucky that there was not much traffic. My wife and I were on the side of the road for 2 hours at dusk and in the dark with 65+ MPH traffic zooming by. Also had a impossible time tracking down a rental call just to continue to my wife's grandmother's funeral service. I just talked with the dealer and they will not have a diagnoses for me until late tomorrow. 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
#11652788April 4, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2023 GMC Sierra 1500. The contact stated while driving at various speeds, the vehicle experienced a loss of motive power. The contact shifted to neutral(N) and was able to restart the vehicle. Additionally, the contact stated that while driving 55 MPH and pulling an unloaded trailer, the vehicle suddenly stalled. A message advising the contact to shift to neutral(N) and to attempt to start the vehicle was displayed; however, the vehicle failed to restart as intended. The contact was still able to use the power brakes and the power steering, which allowed the contact to pull over in a safe area. The vehicle was towed to the dealer, where it was diagnosed that the presence of copper filings in the oil had caused the engine to run roughly. The dealer determined that the engine needed to be replaced; however, the part was not available. Additionally, the average waiting period for an engine was approximately 6 months. The vehicle was not repaired. The manufacturer was informed of the failure and a case was filed. The failure mileage was 33,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11652846April 4, 2025
POWER TRAIN
The system that is not working properly is the transmission. It is available for inspection upon request. The safety of the vehicle, and myself, was put at risk because the transmission (once warmed up / at least 30-60 minutes of driving takes place) downshifts hard, making a clunking noise, and has at worst given the vehicle a rough nudge/jolt forward upon downshifting particularly from 2nd to 1st gear (it is a 10 speed transmission). This issue, when it occurs, will require me (the driver) to apply extra force to the brake pedal due to the rough downshift / jolt upon shift. The issue is exacerbated when quickly stopping the vehicle causing the transmission to downshift more rapidly. The vehicle's transmission flaws, of which this happens to be one of them, were being looked into at a certified repair facility (dealership). After the vehicle was in their possession 3 days, they informed me that they could not replicated or reproduce the issue. I informed and reminded the following: (1) the vehicle has to be warm and operated for I would state at least 30-60 minutes of driving before the issue arises (2) I have recorded videos of the problematic sounds of the transmission. (3) I am willing to go for a test drive to try to replicate the issue with dealership staff, but the issue is infrequent and the vehicle must be warmed-up and/or driven more than the typical "test drive" for the issue to be observed. The vehicle component has been inspected by a certified repair facility (dealership), but not directly by a manufacturer's direct representative, police, insurance representatives, or others. The transmission is also problematic in another way (rattling at low rpm's during upshift), but pertaining to safety the downshift is most concerning as described above. There were/are no warning lamps or messages. The symptoms of the problem pertaining to the transmission began occurring around 11,800-12,000 miles in my estimation.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11652500April 3, 2025
ENGINE
I was driving on the interstate when my vehicle’s display indicated that I needed to press start and that is when I noticed the engine was not running. I had to quickly pull over moving three car lanes all while coasting and I came to a stop. I tried multiple times to restart but the engine would not restart. I still had electrical power and turned on my hazard lights and called for a tow truck.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11652530April 3, 2025
STRUCTURE
The contact owns a 2023 GMC Sierra 2500. The contact stated that his son informed him that there was a puddle of water in the rear seat. The vehicle was taken to the dealer, where it was diagnosed that the upper track for the rear sliding window was fractured on both sides, causing water to leak inside the vehicle. The dealer determined that the rear window needed to be replaced; however, the part was on backorder. The vehicle was not repaired. The manufacturer was notified of the failure and case was filed. The failure mileage was approximately 21,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11651943April 1, 2025
ENGINE
Engine Failure
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11652146April 1, 2025
POWER TRAIN
Transmission failure upon acceleration through intersection. Engine high revved went into Low Power Mode. Was lucky to not be rear ended with sudden loss of acceleration. Truck would also not go above 40 safely.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11651812March 31, 2025
POWER TRAIN
Rear axle locked up driving down the interstate at 65mph. Had I been towing, the incident could very well have caused an accident. Truck taken to dealer and was inspected. Gave an error code of P0747. Per the dealer it was caused by a faulty valve body in the transmission. Part is on back order for months to get fixed. Truck is not drivable as it will not go out of 5th gear. Was told that the problem was found in many models from 2020-2024.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11651578March 30, 2025
ENGINE
Driving at night on non-marked rural road at approximately 40 mph when the motor quit. I was going slight downslope and didn’t know until the Push button to start message came up. I coasted to a stop in the road and when push button to restart the lights went out and no movement of engine. Even though the lights came back on when button was pushed again nothing seemed to respond. Emergency flashers and radio did work. Transmission selector would not go to neutral to allow movement from the road. I called wrecker service and set in the truck for about a hour waiting and nervous about someone hitting me from behind as it was a dangerous spot just around a corner. The wrecker could not get the truck in neutral after several attempts ended up dragging the truck to get it loaded. Since I was within a mile from my home and it was midnight on Saturday I had him take it to my home. Monday I called Thompson GMC and wrecker came took it in to the dealership in Springfield MO. Tuesday 8:30 am I received a text from service saying that it was going to have to have a new motor as it was completely full of metal shavings. The replacement 6.2 engines were on backorder and they didn’t know when they could expect them. I was shocked as I had not had any trouble and really liked my truck to this point. I tried to get dealership to trade for another truck but they didn’t seem to want to wait for the engine either and would not give much for trade on a 18 month old truck. Obviously, this is a frustrating position as the truck is a huge part of my life. In the last few days I have found that GM has known of the problem for some time and they don’t have a remedy for me to recover my investment in their faulty product. I saw on internet where NHTSA had more than a 1000 complaints so I decided to add mine. You can bet that their are many many more that have been repaired before the motors went on backorder that are not reported. GM needs to step up NOW!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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