GMC Sierra Complaints

15,732 consumer complaints on file.

#11700312November 19, 2025
ENGINE
The engine failed and started burning oil at a rate of 3 quarts every two weeks. The vehicle is currently at the GMC dealership having the engine rebuilt at a cost of over $15,000. The vehicle has approx. 116,000 miles at time of failure, so it is outside of the manufacturers warranty. The GMC dealership (Fred Anderson Greer) has photos. The engine is a 6.2L but not currently under recall as it is a 2020, the recall includes 2021 - 2024 models.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11700313November 19, 2025
ENGINE
Informant system tells me that the engine oil is low every time right at about 1,000 miles after I change the oil. There have been times where the engine has hesitated to accelerate shortly after receiving the message. I've taken truck to be serviced with no oil leaks found. I purchased this truck with 21,000 miles on it, and it's been doing this ever since I've had it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11700355November 19, 2025
ENGINE
While driving my Sierra AT4, my engine shut off with no previous indication of a problem. The dash simply said to restart the vehicle. Unable to do so, I coasted the vehicle into a parking lot. Once it was diagnosed to be a defective engine, I replaced it with a new GM long block assembly paid out of pocket as the vehicle had 210,000 miles on it and was well out of warranty coverage. The first replacement engine lasted 15,000 miles before developing a spun bearing in the engine. GM did cover replacement of the engine assembly. The 2nd replacement engine was installed 12/2022 and lasted until 2/2025. Same engine seizure problem as the original due to the bearing failures that plague this engine series. Engines have always run 0-w20 Mobil1 synthetic as recommended by GM. Vehicle is currently waiting for GM to make a decision to cover it or not.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11700059November 18, 2025
ENGINE, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
ENGINE BURNING OIL AND BLOWING WHITE SMOKE OUT TAIL PIPES. HAVE TO ADD OIL EVERY 1500 MILES OR SOONER IF TOWING. HAS BEEN AN ISSUE SINCE FIRST OIL CHANGE. VEHICLE IS NOW AT 88057 MILES
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11700178November 18, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2020 GMC Sierra Denali. The contact stated that while stopped at a traffic light with the brake pedal depressed, the vehicle shut off unexpectedly. There was no warning light illuminated. The contact made several attempts to restart the vehicle; however, the vehicle failed to restart. Due to the failure, the vehicle was towed to the dealer where a diagnostic test was performed. The contact was later informed that the engine had seized due to engine bearing failure, and the contact was provided an estimate for a new engine. Upon investigation, the contact discovered NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling) and linked the recall to the failure. The manufacturer was notified about the failure and the recall, and the contact was informed that the VIN was not included in the recall. The vehicle was not repaired and remained with the dealer. The failure mileage was approximately 190,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11700188November 18, 2025
POWER TRAIN, ENGINE
2018 GMC Sierra started having shuddering/jerking/jumping problems at around 60k miles. This problem occurs while driving on straight aways, going uphill and while in drive at a stop sign/light. When the gas is accelerated the truck then hesitates and jerks/jumps. We have taken it to the GMC dealership and paid for the diagnostics and were informed “the problem wasn’t severe enough”. The truck has only been serviced by GMC dealership. So after failed attempts with GMC service department we have taken it to a local small auto shop and they automatically said it was the Drive Train and needed to be taken to a transmission shop. We have been GM owners for decades and are so disappointed in the service received from them.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11700192November 18, 2025
ENGINE
The engine oil drained into the radiator from a flaw in there design in which outrageously high labor cost for the owner of the vehicle they put a rubber house in the radiator in which leaked without any warning indicating that there was a problem with the oil nor the radiator coolant system. repairs are in the thousand and I as a consumer should have this matter resolved at no cost due to bad design cost they should have made a oil cooler with its own separation compartment like the transmission cooler because they are replaceing everything else what about the engine itself thats still going to be contaminated like all the replacement part, seal hoses,and radiator, coolant, and thermostat. How can just parts be contaminated but not the engine? They are just replacing things that costs alot. This is a drive train issue, there were no oil in the engine.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699761November 17, 2025
ELECTRICAL SYSTEM, FORWARD COLLISION AVOIDANCE: WARNINGS, LANE DEPARTURE: WARNING
weekly you will start the truck and have no audio of any kind. No blinker noises no collision warning noises, no radio, no on star noise. No sound at all and sound will never come back on until you turn truck off and wait 20 mins. GMC says it's a known software issue, but this has been going on since I bought the truck brand new back is April of 2025. I live in a hands free while driving state when it's come to cell phone use and can't even take a call with no audio of any kind. I don't see how GMC can say this isn't a safety issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699773November 17, 2025
ENGINE, POWER TRAIN, SERVICE BRAKES, HYDRAULIC
The contact owns a 2022 GMC Sierra 1500. The contact stated that on several occasions while driving at speeds over 20 MPH, the vehicle began shaking and the transmission shifted prematurely and hard. The contact stated that the check engine, traction control, ABS, transmission, and other unknown warning lights were intermittently illuminated. The contact stated that on one occasion while driving at an undisclosed speed, the brake was depressed; however, the vehicle failed to slow down as intended. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 46,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699840November 17, 2025
VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
The contact owns a 2017 GMC Sierra 1500. The contact stated that after remote starting the vehicle, upon entering the vehicle, the contact became aware of a burning odor in the interior of the vehicle. In addition, the contact noticed smoke coming from the rear of the vehicle, and the back glass was fractured. The vehicle was taken to the dealer, where it was diagnosed with a failed defrost resistor. The contact was informed that the defrost resistor needed to be replaced. The vehicle was not repaired. In addition, the contact stated that five years prior, a recall repair was performed, and the defrost resistor was replaced under the recall. The manufacturer was made aware of the failure, and a case was filed. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 109,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699845November 17, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2021 GMC Sierra 1500. The contact received the recall letter for NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling). The contact called the local dealer, who confirmed there was no information from the manufacturer to move forward. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The contact had not experienced a failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699863November 17, 2025
ENGINE
This is the 3rd catastrophic engine failure since purchasing this new vehicle from the dealership, the vehicle is currently at the dealership and is available for inspection. The latest diagnostic report has been attached from the dealership for reference. My safety and the safety of others was at risk with each occurrence. The 1st occurred on the interstate when a lifter rod bent causing loss of power with no warning, engine was rebuilt by the dealership. The 2nd occurred on the interstate when a different lifter rod bent causing loss of power with no warning, engine was rebuilt again by the dealership. The 3rd occurred just recently while on a highway. The engine suddenly turned off with no warning. The dash told me to put it into neutral and start again. I had to coast the truck for a long distance after the sudden loss of power in order to attempt to restart the engine. The engine would not start. The diagnostic report from the dealership states "engine is seized tight, maxi fuse is blown, needs engine replacement."
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699884November 17, 2025
ENGINE
My engine is currently being torn down at the dealership.I heard a ticking noise coming from my engine so I took to the dealership I bought it from and when they did their diagnostics and inspection they said it was a connecting rod bearing failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699962November 17, 2025
ENGINE
While traveling to work at 75mph, a sudden an unexpected malfunction of internal engine components caused a loss of propulsion.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699651November 16, 2025
STRUCTURE:BODY
Grille deflector was torn off the vehicle while driving at highway speeds.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699612November 15, 2025
SERVICE BRAKES, POWER TRAIN, ENGINE
First my torque converter went out, no warning lights only shaking wehn shifting, I got it replaced already it cost me $2400 Second Warning light service for Brakes, Traction and power steering come on and off. And sometimes truck doesn't brake well and steering wheel feels hard to drive, it has happened while on expressway with family. Third Engine oil low Add oil warning sign comes up alot and I have to add oil, engine has a rough idle now, also when I turn truck on smoke comes out while having a rough idle, recently it started knocking, I haven't moved the truck since than
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699411November 14, 2025
POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER
The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the transmission vibrated. No warning lights were illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed with a failing torque converter. The contact was informed that the torque converter needed to be replaced. The vehicle was not repaired. In addition, the contact was informed of a Manufacturer's warranty. The contact was informed of a Manufacturer's warranty for the 2018 GMC vehicle's transmission failure due to the incorrect oil being used during production of the torque converter. The dealer was made aware of the failure; however, the contact was informed that the manufacturer needed to approve the repair coverage. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 89,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699412November 14, 2025
SERVICE BRAKES
While driving in my uncongested neighborhood, my brakes totally failed. Dash indicated multiple brake failure warnings. I managed to get my truck stopped and returned home by engaging my low range, four wheel drive. If I had been in on the open road, going down a hill, negotiating a curve, or in traffic a crash would have ocurred, potentially fatality. My vehicle was towed to a GMC dealership. They diagnosed the problem in the electronic braking module with a software update needed. My vehicle Is a 2019, but had only 23,283 miles at the time of the braking failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699478November 14, 2025
ENGINE
2019 GMC Sierra that was not on recall list for engine, had same exact issue as the recalled engines. We were driving, light came on and it wouldnt work properly. We immediately took it for diagnoses and it was same reason as the recalls, however our engine wasnt on the list. We just had to pay 14K cash for our truck engine and repair. We purchased 5/24 with 78K miles and it stopped at 94K miles. We didnt have the truck for 5 months because of the motor recalls were backed up. GMC refusing to reimburse us even tho there is still issues with that motor
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699362November 14, 2025
ENGINE
The starter started dragging about a year ago and on November 12 the 2019 GMC truck would not start. We had it towed to Harper GMC in Minden, La. They told us the motor was locked up. This vehicle has a little over 40,000 miles on it. Has always been parked in a carport out of the weather and still looks brand new. I see where 2021 GMC trucks have a recall on the motor and this is the same problem with our 2019.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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