GMC Sierra Complaints

15,732 consumer complaints on file.

#11673299July 14, 2025
POWER TRAIN
There is an active recall regarding the safety of my vehicle. NHTSA: 25V274 Manufacturer: N252494000 I contacted GM and was told to see a dealer to have my engine replaced. The dealer is refusing to remedy the recall and pointed me back to GM stating that "GM told us not to service this recall because there isn't yet a remedy". I'm stuck with a very unsafe vehicle that is less than 1 year old and the manufacture is refusing to honor their own recall.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673300July 14, 2025
ENGINE
The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling). The contact stated that while driving at approximately 50 MPH, there was a loud squeaking sound coming from the front driver’s side of the vehicle before the vehicle lost power. Simultaneously, the check engine warning light started blinking. The vehicle was pulled over to the side of the road and the sound became louder, before becoming a knocking sound. The vehicle was restarted, and the failure persisted. The vehicle was towed to the residence. The vehicle was not diagnosed or repaired, but a dealer stated that there was as recall associated with the VIN; however, parts were not yet available to repair the vehicle. The manufacturer was not notified of the failure. The failure mileage was approximately 128,000. VIN tool confirms parts not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673308July 14, 2025
POWER TRAIN
The contact owns a 2022 GMC Sierra 1500. The contact stated while driving 25-30 MPH, the transmission shifted hard while depressing the accelerator pedal. The contact stated that while driving 75 MPH with the cruise control activated, the vehicle hesitated with the message "Service Transmission Immediately" displayed. The vehicle stalled and the contact coasted the vehicle off to the shoulder of the highway. Due to the failure, the vehicle was towed to an independent mechanic. While speaking with a relative that owned a similar vehicle, the contact was informed of NHTSA Campaign Number: 24V797000 (Power Train); however, the VIN was not included in the recall. The manufacturer was notified of the failure and confirmed that the vehicle was not under recall; the contact was referred to the NHTSA Hotline to report the failure. The vehicle was not repaired. The failure mileage was approximately 100,200.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673317July 14, 2025
ENGINE
Check engine light came on. Cooling fan for engine running none stop. Reduce power mode from engine. Took to dealer, said it’s the coolant control valve. Dealer said the part is on back order and don’t know when they will get it in. Looked up the issues and sounds like many people are having the same problem with the 3L diesel from GMC. These people reporting the same thing and having to wait months for the part. My truck was just out of warranty by 200-300 miles
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673334July 14, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING); however, the part to do the recall repair was not yet available. The contact stated that while the vehicle was stopped, the vehicle idled intermittently. In addition, an abnormal sound was coming from the left side of the engine. The vehicle was not diagnosed or repaired. The local dealer was not contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The failure mileage was unknown. VIN tool confirms parts not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673425July 14, 2025
ENGINE
My 2021 GMC Sierra 1500 with L87 engine, covered by recall 25V274. None of my local dealers are inspecting for this recall. This truck is my daily driver and I routinely drive on interstates for my work. GM has been slow to address this major manufacturing defect and has not remedied the problem. My truck is no longer worth what is was previously and is lowering trade in or sale value. I am requesting that GM buy back my vehicle due to ongoing safety risks and loss of value.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673459July 14, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2024 GMC Sierra1500. The contact received notification from the OnStar App regarding NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and informed the contact that the vehicle could not be repaired. The manufacturer was made aware of the issue and stated that no assistance would be provided until an authorization letter was sent to the contact for the recall repair to be performed. The contact had not experienced a failure. Parts distribution disconnect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673504July 14, 2025
ENGINE
I recently purchased a 2024 GMC Sierra 1500. On July 14, 2025, I was informed of a recall involving the L87 engine and a risk of loss of propulsion. This is a major safety concern that can cause the vehicle to suddenly lose power while driving. I was advised not to drive the truck due to safety reasons, but GM has not released a fix or repair solution for this recall. This issue puts my safety and the safety of others at serious risk, as the vehicle could lose power without warning on the road. I contacted the dealership (Findlay Chevrolet, Las Vegas) and GM directly, but no timeline or resolution has been provided. I am now stuck with a vehicle I cannot legally or safely drive and no support from the manufacturer to resolve the issue. There were no warning lamps or prior symptoms before the recall was issued. The problem has been acknowledged by the manufacturer but remains unresolved. The vehicle has been inspected and the recall confirmed by the dealership, but they stated there is no fix currently available. I am requesting that NHTSA take this seriously and put pressure on GM to either provide a safe solution, a loaner vehicle, or a buyback program until the recall can be resolved.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673134July 13, 2025
ENGINE
Pulling away from a stop sign when we were driving, and when I started to excelerate the truck it just died. We were at a busy intersection and was able to pull off the road into a parking lot and had AAA come and tow the truck and took it to Poages Auto Plaza, Quincy IL. This could have been really serious had we been on a busier road. We tried to restart the vehical and it would not start. We are going to need a loaner vehical preferrably a Truck.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673218July 13, 2025
ENGINE, FUEL/PROPULSION SYSTEM
Was informed from by GM that my vehicle is involved with a recall an still hasn't been repaired
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11672973July 12, 2025
ENGINE
On Dec 27 I noticed a skip in my engine when I started the truck. I took the truck to Cronic Buick GMC on Jan 6 for an inspection. They reported to me that the engine failed.Seized up. I reported the incident to my extended warranty company Warranty Solutions. They refused to do the repair because I was late for an oil change in 2022. After 3 weeks and no cooperation I contacted GM customer service. I was assigned an agent that help initiate the engine repair . The repair was completed on April 12 (3 months after the failure). I paid $4600 out of pocket for a portion of the engine repair .
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11672996July 12, 2025
ENGINE, POWER TRAIN
What component or system failed or malfunctioned, and is it available for inspection upon request? The valvetrain system failed due to broken rocker arms, which resulted in additional internal engine damage. This failure occurred under normal driving conditions. The affected components have not yet been discarded and are available for inspection upon request.How was your safety or the safety of others put at risk? The failure caused sudden engine misfiring and knocking, reducing engine power while I was operating the vehicle. This significantly compromised acceleration and response time, especially during merging and lane changes, which could have led to an accident. Any unexpected loss of power or engine instability at highway speeds poses a serious risk to myself, passengers, and other motorists.Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. The issue has been diagnosed and confirmed by an independent certified mechanic, who verified the broken rocker arms and resulting engine damage during inspection.Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? The vehicle has not yet been inspected by the manufacturer, police, or insurance representatives. Only a certified independent mechanic has inspected the failure thus far.Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? Yes. The check engine light appeared and the engine began running rough and producing a knocking sound. These symptoms occurred just prior to the confirmed failure and prompted me to stop driving the vehicle immediately and have it inspected. Given the seriousness of this issue and reports from other GMC 5.3L engine owners experiencing similar rocker arm failures, I urge the NHTSA to investigate this potential defect. It poses a real and significant safety risk.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673021July 12, 2025
UNKNOWN OR OTHER, LANE DEPARTURE: ASSIST, BACK OVER PREVENTION: WARNINGS
1. Lane Keeping Assistantance: The green vehicle indicator on the dashboard will disappear and stay off while driving. When it is off, it is unsafe. 2. Parking Collision Warning: The front and back sensors will disappear and become nonfunctional while driving and parking. Sometimes they activate for no reason as well. 3. Both exterior mirrors: After starting the engine to drive off , both exterior mirrors will lower automatically from my setting. After the truck is started and driven off, they must be rest again.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673050July 12, 2025
STRUCTURE:BODY
While driving on [XXX] from Houston to San Antonio the front Grille spontaneously flew off from my hood and hit my windshield. Grille damaged the hood but no known damage to shield. This was very frightening while on a highway because it almost caused me to crash as it triggered my PTSD from the blast and led me to swerve. Fortunately I regained vehicle control and avoided other damage to others. 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
#11672673July 11, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000(Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that while driving at approximately 60 MPH, the check engine warning illuminated and the vehicle stalled. The contact pulled to the side of the road and attempted to restart the vehicle, but the vehicle failed to restart. The vehicle was towed to the residence. The contact stated that the failure had previously occurred several times while driving. An unknown local dealer was contacted and informed the contact that the recall parts were not available. The vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was contacted and a voicemail message was left, but the manufacturer had not returned the contact's call. The failure mileage was approximately 70,000. VIN tool confirms parts not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11672898July 11, 2025
STRUCTURE:BODY, UNKNOWN OR OTHER
My multipro tailgate on my 2020 GMC Sierra 1500 unlatched while a trailer was attached and backing up said trailer. The trailer jack post proceeded to buckle the upper part of the tailgate assembly causing extensive damage resulting in over a three thousand dollar repair bill. If the tailgate had released while a child was in close proximity, serious injury may occur. The tailgate has inadvertently released twice in the five plus years I have owned it, the first time as I was traveling down a highway at over 60 mph. This could have endangered a vehicle to my rear if cargo had been released on to the road. I have reached out to a local dealership for repairs and assessment, no real way of troubleshooting something that has happened twice in five plus years. The scan did not show any codes. the info center does notify you if it is released but not before it takes place and after the fact may be too late in some circumstances as it was during the second occurrence. There has been a recall on 2500 and 3500 models with the exact same tailgate but not the 1500 models. 820K vehicles affected but not on the 1500's.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11672901July 11, 2025
ELECTRICAL SYSTEM, ENGINE, POWER TRAIN
Truck completely shuts off at any speed going down the highway. Complete loss of power. Have to coast to side of road and restart vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11672937July 11, 2025
STRUCTURE:BODY
Multiple times today my tailgate dropped randomly without my knowledge. With the tailgate randomly dropping, and no warning lamps, messages, or other symptoms, it puts others at risk due to the potential for the contents of the truck bed to fall out into traffic causing damage or bodily injury to others on the road. During my research on what could cause this to occur, I was made aware of a recall of this same make, model, and year vehicle. The description of the reason for the recall was exactly what I experienced with my vehicle. I immediately attempted to confirm that my vehicle was listed on the recall by entering by VIN online. I discovered that there was not an active recall on my specific vehicle, so I contacted the nearest GMC dealership. After speaking with the service tech, he confirmed that my symptoms was exactly what the dealership had addressed with other vehicles that were on the recall list. He confirmed that my VIN was not included, yet the recall did have the same make, model, and year. I will be making an appointment at my dealership to repair this at my expense since it is not covered on the recall.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11672483July 10, 2025
SERVICE BRAKES
Pressing the brakes more than once locks the brakes up multiple times this has happened. Not an isolated event
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11672512July 10, 2025
VEHICLE SPEED CONTROL:ACCELERATOR PEDAL, SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
The contact owns a 2024 GMC Sierra 2500. The contact stated that while driving at an undisclosed speed and approaching a stop, the contact simultaneously depressed the brake pedal and accelerator pedal, causing the vehicle to move forward and to stop simultaneously. The contact stated that the pedals were significantly close to each other. The contact’s foot was sliding off the pedals. The vehicle was taken to the local dealer, and the contact requested for an adjustment of the pedals. The vehicle was not diagnosed or repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 10.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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