GMC Sierra Complaints

15,732 consumer complaints on file.

#11705065December 15, 2025
POWER TRAIN, ENGINE, FUEL/PROPULSION SYSTEM
My truck went into "limp" mode and had very little power. It was towed to the dealership where they diagnosed the issue as a bad solenoid causing the engine misfires. The solenoid was replaced, but the issue was not fixed. Now the dealership is stating the engine has bent lifters and the repairs will not be covered under the ongoing massive engine recall. The vehicle had the pico test on 9/17 and it "passed", but less than 3k miles later and the engine failed. This is a clear safety issue and well known by NHTSA and GM. Now I'm negotiating with the dealership to cover repairs and my truck has been gone nearly a month.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11705162December 15, 2025
POWER TRAIN
While driving on the interstate at 70 mph, the transmission began to shudder. It continued the duration of the trip of 90 mins. Following day, the transmission is continuing to shudder and is now shifting hard.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11705173December 15, 2025
FUEL/PROPULSION SYSTEM, ENGINE
12/7/2025 8:48 AM Engine lost propulsion while driving 35mph enroute to residence. The engine cut off and at the same time we saw a cloud of blue smoke trailing the vehicle. The engine refired and propulsion resumed. I immediately looked at the dash display for an indicator light resulting from the lack of propulsion. There were no unusual indicator lights or messages but the tachometer needle dropped about an inch and went back up again rapidly. The engine had resumed running. This loss of propulsion and resumption occurred two more times while my foot was off the accelerator. After the third incident the vehicle seemed to be running normally. I stated we had only about two miles to get home and I hope we make it. The next day I called DeLuz service department to notify them of the incident. I left a message but my call was not returned. I updated service staff of the new incident when I dropped the vehicle off for a previously scheduled appointment on 12/11/25.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11705177December 15, 2025
ENGINE, FUEL/PROPULSION SYSTEM
My truck completely stalled and had to be restarted. I took it to the dealership to have it resolved. They wouldn’t look at the truck without a recall notice. Now there is a recall notice for my exact issue. I took it to be repaired by them but now they are saying that there is nothing wrong with the vehicle and are refusing to do anything about it stalling. They specifically said that I will have to stall and potentially get in a car wreck before they will repair the damaged engine. I have been very disappointed in this entire situation and would like to avoid driving a car that may end up crashing due to a preventable problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11705193December 15, 2025
ELECTRICAL SYSTEM
Tailgate unlatched by itself, first time I was connected to a trailer and it damaged the tailgate. Multiple (4+) times afterwards while being parked in garage tailgate opens by itself all during the same day could not get this to stop. Called dealership today for appointment where they could get me in the shop in the middle of the week, but they told me that this issue is known but not covered under my VIN.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11704835December 13, 2025
STEERING
Bad vibration and bad wobble in steering wheel and front end components. This is the 3rd or 4th time my truck has been back to the dealer because of the same issue!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11704848December 13, 2025
ELECTRICAL SYSTEM, VISIBILITY/WIPER
The morning of December 12th, 2025 I used my vehicle to transport my daughter approximately 5 miles round trip from our home to drop her off at daycare and then I returned home. I used my front and rear defrost elements to expedite removal of heavy condensation which had formed on all windows overnight. This was approximately 7 AM. I parked my truck in the driveway and went inside until approximately 11:45 AM when I went to leave in my truck and noticed the rear sliding window had shattered. The window shattered and distributed tempered glass fragments all over the inside of the cab. Only approximately 10% of the window remained intact. I then reviewed the security camera footage from my driveway and discovered that the window failed entirely on its own with nothing hitting/striking/touching the window, nor any humans or animals in the vicinity. I attempted to take the vehicle to a GMC service department this morning (Dec 13) but due to their demand to keep the vehicle for 2-3 days to investigate yet unable to provide a loaner vehicle, I was unable to leave the vehicle in their possession and returned home. I plan to continue to contact GMC dealership service departments in hope I can find one which can provide a loaner vehicle, as I will need transportation to and from work in the coming days. I do have video footage of the incident although I am unable to add it below.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11704690December 12, 2025
VEHICLE SPEED CONTROL:CRUISE CONTROL, VEHICLE SPEED CONTROL
The contact owns a 2022 GMC Sierra 1500. The contact stated while driving at various speeds, the vehicle independently accelerated. The contact stated that the failure had occurred while driving approximately 60 MPH with the cruise control engaged and set at manual control and not adaptive cruise control. The contact stated that after manually disengaging the cruise control and depressing the brake pedal, the vehicle failed to respond as intended, and the vehicle unintendedly accelerated. The contact stated that the vehicle nearly crashed into the rear of another vehicle due to the failure. There was no warning light illuminated. The contact stated that the failure had been recurring intermittently. The vehicle was taken to a local dealer, but the vehicle could not be diagnosed because no DTC was retrieved. The vehicle was not repaired. The manufacturer was informed of the failure, and the contact filed a complaint. The failure mileage was approximately 33,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11704789December 12, 2025
POWER TRAIN
The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the transmission unexpectedly hard downshifted. No warning lights were illuminated. The contact stated that the vehicle was hesitating while driving the rest of the drive. The vehicle was taken to the dealer; however, no cause for the failure was found. The dealer performed an 8-speed transmission fluid and filter replacement. The contact stated that the failure persisted. A month later, the contact stated that on a separate occasion, the transmission unexpectedly downshifted. No warning lights were illuminated. The vehicle was taken to the dealer; however, no cause for the failure was found. The contact stated that the failure persisted. The contact stated that a month later while her husband was driving on the freeway at an undisclosed speed, the engine seized and the rear-end locked and threw the driver into the steering wheel even though the seat belt was securely buckled. The contact stated that the transmission was stuck in drive(D), and the vehicle was unable to move forward. The driver shifted into reverse(R) and was able to pull off the freeway. The contact stated that the vehicle was then driven to an empty parking lot and left overnight. The vehicle was then picked up the following day and was driven to the dealer; however, no cause for the failure was found. The contact stated that the failure persisted. The manufacturer was notified of the failure. The contact hired a GMC engineer to inspect the vehicle and informed the engineer that the vehicle needed to be driven a minimum of three days and 300 miles before experiencing the failure. The contact stated that the engineer drove the vehicle for 100 miles. The contact stated that the GMC engineer and one of the employees at the dealer suggested replacing the PCM module because there was no fault code present during the failure. However, the contact was informed that there was no guarantee that replacing the PCM would fix the vehicle. The failure milea
Crash:
No
Fire:
No
Injuries:
1
Deaths:
0
#11704497December 11, 2025
ELECTRICAL SYSTEM, SERVICE BRAKES, HYDRAULIC
The contact owns a 2026 GMC Sierra 1500. The contact stated that upon starting the vehicle and shifting into reverse(R), the vehicle failed to move while depressing the accelerator pedal. The contact felt a hesitation while depressing the brake and accelerator pedals, and the contact then attempted to restart the vehicle. The contact restarted the vehicl;e however, while attempting to accelerate, the brakes independently activated. Despite the repeated failure, the contact was able to pull into a gas station to restart the vehicle. The contact stated that after several attempts, the vehicle finally resumed normal operation, and the contact drove the vehicle to the residence. The next day, the contact test drove the vehicle, and the failure reoccurred while the contact was attempting to park the vehicle in a parking spot. The vehicle was taken to a dealer, where a diagnostic test produced 7 fault codes; however, the mechanic was unable to repair the vehicle. The manufacturer was notified of the failure, and the manufacturer stated that there was a communication disconnect between the contact and the dealer. A case was filed with the manufacturer. The vehicle was not repaired. The failure mileage was approximately 300.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11704518December 11, 2025
STEERING
Heated steering wheel gets so hot it almost burns to touch it. IR Thermometer readings at the 10 and 2 o'clock positions read between 119 and 125 degrees Fahrenheit. Bottom of the steering wheel is 127-130 degrees. Have made an appointment to have the dealer check for issues.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11704537December 11, 2025
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING, POWER TRAIN, VEHICLE SPEED CONTROL
With no warning truck just started jumping in neutral after take off from red light litterly almost getting hit from behind and on coming traffic and than I let off the gas pedal than it jerks back in gear and doesn’t want to stop and wants to jerk to keep moving like transmission won’t stop pulling had to turn truck off it is something electrical in transmission I can pull fuse and it resets than it’s normal till it decides to do it again I’ve got on line and notice there is a lot more of the same truck and year having same issue and people have complained also mechanical at dealer says they have had many complaints on same issue I need my truck fixed it gave no warning and is to dangerous to drive like it is
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11704612December 11, 2025
UNKNOWN OR OTHER
I saw the report regarding models of Chevrolet trucks not receiving owners manuals from factory. I purchased a 2026 GMC AT4 in early October 2025. It didn't come with a manual either. I emailed my sales person at Ewing GMC in Plano, Texas informing him that it was missing the manual and I was told that GM had decided to only include physical manuals with Denali grade trucks. This didn't make any sense whatsoever. I would prefer to have a physical manual available to reference in the event of vehicle issues.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11704617December 11, 2025
ENGINE
Had a "Trans Hot Warning" light. Dealership said it was internal valve body failure. They said there is recall on this for other engine types even though this is same issue. I think GMC needs to expand their recall.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11704431December 11, 2025
ENGINE, FUEL/PROPULSION SYSTEM
While driving my 2024 GMC Sierra Denali Ultimate on the highway, the engine suddenly failed without warning. The truck shut off completely while I was traveling at highway speed. I was fortunate to be able to safely maneuver to the shoulder, but the sudden loss of power created a serious risk of a collision with surrounding traffic. The failure appears to involve the engine or engine control system. The vehicle engine is currently available for inspection upon request. Prior to the incident, there were no warning lights, messages, or unusual symptoms. The shutdown occurred abruptly with no prior indication of a problem. This vehicle previously received the NS25249400 safety recall repair on August 12, 2025, and it reportedly passed all required checks at that time.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11704447December 11, 2025
ENGINE
https://static.nhtsa.gov/odi/rcl/2025/RCRIT-25V274-6343.pdf Safety Recall N252494001 L87 Engine Loss of Propulsion I am currently writing due to my vehicle falling under the guidelines of this recall but it is not listed in the recalls. I have been in contacts with GM directly as they say because it is not listed on NHTSA as a saftey recall they will not cover the cost. I am writing to try to get this listed as I currently can not get an oil change at any location but a GM dealer because it is listed in the systems.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11704460December 11, 2025
POWER TRAIN
I was accelerating from a stop light at green. The RMP's revved up, truck jerked, and it would not shift or accelerate. I was almost rear ended on a busy street. There was not warning light prior. The service light then came on. I pulled over, turned the truck off. I turned it back on and put it in drive. It shifted to 30 mph, jerked, and would not shift. The message on the dash states it is in limited power, in limp mode. The GMC app states there is a Transmission system issue detected. My mechanic stated the control module is bad and needs replaced. I called GMC and they stated it is out of warranty by 4795 miles. Having a vehicle that will not accelerate on a busy street is dangerous. It is a 2022 with low miles. I limped it to my work office 2 miles away and called family to get me. I live 50 miles from work.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11704128December 10, 2025
ENGINE
Just had my 2019 GMC sierra 1500 Denali engine fail. My truck has 75k miles oil changed regularly no codes, issues or dash lights. Recently had it at GMC I Folsom California for a rear window replacement. Full inspection with no issues and nothing found wrong. Sunday 12/7 with my girlfriend and son in the truck about to get on the freeway felt a weird shift as I got on the freeway on-ramp. As I went to accelerate I had my traction control lights come on, lost power, and flashing check engine lights limped the truck off the side of the freeway and exited to a gas station. My truck wasn’t leaking anything and oil pressure was good but it sounds like popcorn was being made in my engine when it was on. Had my truck towed to Folsom GMC and yesterday 12/8 got a call I need a new engine. Called GM corporate to talk to them and opened a claim. GMC dealership got an initial help with 15% of the bill telling me I would need to pay $13,315. Talked to the service advisor and they put in a request for help from GM. Today at 9:00 a.m. they offered 50% coverage and I was able to get a little more but it still has me paying $7,500 and it will be 2-3 weeks to get the repair done. The dealership also will be getting me a loaner vehicle. This dealership has not been great but with this they are trying and doing a lot. However 75k on a truck that does not haul or have heavy use and is 7 years old with no prior issues is crazy. I was told cylinder 8 showed a misfire. Once they opened it up there was damage to the pushrods, valves and lifters with significant metal throughout the motor. I’m still waiting for corporate GMC to get back to me and hoping they will help or offer more money off as this is still a very large bill for a single father of 2 around the holidays. I bought the truck used with about 32k on it in 2022 and have had no mechanical issues or codes related to the motor or transmission.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11704348December 10, 2025
POWER TRAIN, ELECTRICAL SYSTEM, STEERING
The contact owns a 2019 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the vehicle jerked and failed to accelerate as intended while depressing the accelerator pedal. There was an abnormal sound coming from the transmission. The message "Reduced Engine Power” was displayed and the transmission warning light was illuminated. The vehicle was taken to the dealer and the transmission was repaired. The contact stated that the failure persisted. The vehicle was taken back to the dealer, and the transmission was replaced. The contact stated that on a separate occasion, the A/C failed to function as intended. The contact had to drive for fifteen minutes for cold air to come from the A/C vents. The vehicle was taken to Houston Cadillac and the vehicle was repaired. The contact stated that the failure persisted. The dealer diagnosed the vehicle and informed the contact that there was a short circuit. However, no cause for the short circuit failure was found. An unknown repair was done on the vehicle. The contact stated that the failure persisted. The check engine warning light was illuminated. The contact stated that on a separate occasion, there was an abnormal sound coming from the steering wheel. The vehicle was taken to Payne Rio Chrysler Dodge Jeep Ram, where it was diagnosed that one of the bolts found on the steering column was missing and the other bolt was loose. The vehicle was repaired. The contact was informed that the A/C condenser had failed. The vehicle was repaired. The contact stated that the failure persisted. No warning lights were illuminated. The vehicle was taken back to the dealer. The entire A/C assembly was replaced. The contact stated that the failure had occurred soon after the vehicle was purchased. The manufacturer was not notified of the failure. The failure mileage was unknown.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703924December 9, 2025
ENGINE
On Dec 4, 2025, my wife was driving at night on a Texas road going 75mph. Her truck died while driving and the truck shifted into neutral and computer said to restart. When she did, all electrical power was lost including headlights while traveling at 75mph at night. Vehicle eventually was started after she got to the side of the road. A check engine light was present. She made it to her destination with no further problems. Vehicle was taken to the dealership the next day. They said that she may have catastrophic engine failure that is common on the 6.2 liter GM motors.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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