GMC Sierra Complaints

15,732 consumer complaints on file.

#11674248July 17, 2025
SERVICE BRAKES
Brake pedal pivot nut came loose and fell off while driving.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11674259July 17, 2025
POWER TRAIN, VEHICLE SPEED CONTROL
This issue is pertaining to the valve body in my 10-speed transmission. While I was traveling home, the truck experienced a “wheel lockup”. The transmission shifted down aggressively, then putting the truck into limp mode. I had to travel the rest of the way home with a max speed of 35 mph. I have been without this truck for 3 months waiting on parts. This is absolutely unacceptable from gm. Extremely unsave.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11674292July 17, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2024 GMC Sierra. The contact received a notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11674331July 17, 2025
ENGINE AND ENGINE COOLING:ENGINE:DIESEL
Emissions Code showed up on the dash display. Tried to fix the fuel filter and cleaned a sensor off and it still shows the emissions code.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11674340July 17, 2025
POWER TRAIN, ENGINE
While driving on streets and freeways the truck will shift hard and then loss of acceleration and into limp mode. Lights all on dash go crazy like brakes, 4WD, fuel gauge and check engine light. It has done it 8 times now and has been in the shop 5 times with same issue. Major safety issue while driving 70 mile hour then governs it at 55-62 mile per hour.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673860July 16, 2025
ELECTRICAL SYSTEM
When parking and turning the wheel the truck stalled, radio turned off and on, ac stopped working, battery reading dropped. Maybe an electrical issue since it happens continuously, while making turns at slow speeds the truck wants to turn off, lights dim then go back to normal.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673912July 16, 2025
SERVICE BRAKES
I was test driving this 2017 Sierra 1500 SLT and experienced issues while braking. Issues with brakes as the vacuum level drops the brake assist decreases which meant I had to use excessive force to get the vehicle to stop. No warning light, nothing to tell me there is a low pressure brake. This could result in a fatality if a small animal or child walks/runs in front of the truck while truck is moving forward or backwards at low speeds. The dealer doesn’t acknowledge any recall on this vehicle because it isn’t noted as such with GM. I worry that all of the other recalls (4 others) may be an issue too, which include Frontal Airbags not deploying during an accident, faulty wheel sensor causes opposite wheel to engage and cause the vehicle to pull to one side, fuel leak, and child seat anchoring restraint instructions not included in the owners manual.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673956July 16, 2025
ENGINE
My 2019 GMC Sierra 1500 truck exhibiting all the same signs as the recent call for the same 2021 truck recall according to the dealership. This is for the L87 V8 engine. The 2021 engine was used in the 2019 trucks but again the 2019 trucks are not a part of the recall. My repair bill is upwards of $10,000 and diagnostics is upwards for $4,000 even though all are aware of the recent recall and my truck having the same engine.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673999July 16, 2025
STRUCTURE
The contact owns a 2024 GMC Sierra 1500. The contact stated that after driving the vehicle for 20 minutes, the contact would feel significantly weaknand would faint. The contact later noticed that water was leaking from the windshield, which led to a mold infestation. The vehicle was taken to the dealer, and the contact provided a video of the leaking windshield to the dealer; however, the dealer informed the contact that the failure could be duplicated, and no issues were found. The vehicle was not diagnosed or repaired. The contact stated that the Aerotech company had confirmed the presence of mold in the air filter. The contact stated that she had a genetic predisposition to mold, and the mold infestation had caused the contact to sustain swollen sinuses, rashes, hives, to feel tired and to faint at times. The contact sought medical assistance, and the contact's Doctor provided a document that stated that it was unsafe for the contact to operate the vehicle due to the mold. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 10.
Crash:
No
Fire:
No
Injuries:
1
Deaths:
0
#11674013July 16, 2025
ELECTRICAL SYSTEM, STEERING, ENGINE
At low speeds when applying the brake, whether in a turn or traffic, the vehicle will shut off completely. This has happened multiple times and has almost caused accidents on a few occasions. It has also happened while just driving down the road, the entire truck lost power and then came back, the windshield wipers came on as well.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11674096July 16, 2025
ENGINE
The contact owns a 2018 GMC Sierra 1500. The contact stated while his mother was driving 75 MPH on the highway, there was a popping and ticking sound coming from the engine, and while depressing the accelerator pedal the vehicle failed to respond. The driver was able to pull over to the right side of the road and waited for tow truck assistance. A dealer was not contacted. The vehicle was towed the dealer and was diagnosed and determined that the engine needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure, and informed the contact engine would take a while to be ordered. The contact was referred to the NHTSA Hotline for assistance. The failure mileage was 58,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11674104July 16, 2025
POWER TRAIN
Vehicle was in for routine service, oil change and tire rotation. Per the published engine recall bulletin [Manufacturer Recall Number N252494000] the recall directs the technicians to check for a DTC and if not present to drain and replace filter and oil using 0-40W oil, to replace the oil filler cap with new oil specification labeling, and provide a corrected page for the owners operating manual. All very simple steps. There is absolutely no reason for this check and service not to be performed during routine maintenance. GM is dragging their feet on performing a critical recall and should be held accountable for slow walking this recall. Servicing dealer claims they had ZERO 0-40W oil in the entire dealership. I can go to Walmart and get cases of this oil. Replacement Filler Caps, which must be replaced can be quickly produced by the tens of thousands if desired, which apparently is a very low priority for GM. Servicing dealer was Heritage GMC, Rockwall, TX. Desired outcome is to require completion of all outstanding recalls if the vehicle is presented for servicing regardless of reason. Further, to specify a definitive timeline to complete any outstanding recalls and have that information communicated to each owner. Manufacturer Recall Number N252494000 has not been completed at this time.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11674120July 16, 2025
POWER TRAIN, ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
While driving on the highway at 70 MPH, the truck experienced a harsh transmission shift followed by a sudden loss of acceleration and entered shutdown mode to protect the engine. The steering became stiff, all dashboard warning lights illuminated, and a message appeared on the driver display indicating a transmission issue and advising to drive with caution. The RPMs surged and the truck struggled to maintain a speed of 45 MPH while the remaining at 4000 RPM. This created an extremely hazardous situation for both me and my passenger. I safely pulled into the breakdown lane, came to a complete stop, shifted into park, and turned off the engine. Upon restarting the vehicle, the Check Engine Light remained on, and the transmission continued to shift abnormally at low speeds, including noticeable shuddering.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673582July 15, 2025
ELECTRICAL SYSTEM, ENGINE
Per my dealership, there is chaffing in the main wiring harness of the vehicle and the entire harness needs to be replaced. On recall N222391510, for Sierra's of the same year, the harness had to be replaced as well.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673624July 15, 2025
EQUIPMENT
The contact owned a 2019 GMC Sierra 3500. The contact stated while driving at approximately 45 MPH, the vehicle went into “Engine Power Reduced Mode” and the contact attempted to pull over to the side of the road, but the contact stated that the battery went dead and the vehicle shutoff. The contact shifted to park(P) and attempted to restart the vehicle; however, the vehicle failed to restart, and smoke started coming from under the hood. The contact stopped attempting to restart the vehicle, and exited the vehicle and raised the hood, and the vehicle was on fire in the engine compartment on the left side of the firewall. The contact stated that there was gray and white smoke coming from the vehicle and an odor of electrical wires burning. The contact attempted to reach for a fire extinguisher but was informed by another driver who had stopped to see if the contact needed assistance, to step away from the vehicle. The other driver saw the flames coming from the engine compartment and told the contact to step away from the vehicle because it was unsafe to attempt to extinguish the flames, and the engine compartment became engulfed in flames. The Fire Department was contacted and arrived on scene and extinguished the fire. The contact stated that the front end of the vehicle and the front bumper, hood, engine, and engine components were damaged by the fire. Additionally, the front windshield was severely damaged. The vehicle was towed to an impound lot and declared a total loss by the Insurance provider. The contact stated that the Fire Department filed an incident report. The manufacturer was not informed of the failure. The contact related the failure and the fire to NHTSA Campaign Number: 21V496000 (Equipment) which was associated with the VIN. The failure mileage was approximately 242,000.
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0
#11673720July 15, 2025
POWER TRAIN
My vehicle has the 10l80 transmission. It experienced shuddering as well as several rear wheel lock ups at highway speeds. The vehicle is now out of service, since May 19 2025. I have been told there is no answer to shipment of replacement parts.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673721July 15, 2025
STRUCTURE:BODY
2024 GMC Sierra 1500. While driving approximately 75 MPH, the front chrome grille deflector came loose from the passenger side of the vehicle and started flapping. Before I could safely pull over it became detached and flew over the hood of the vehicle striking the front windshield before nearly hitting another moving vehicle behind me. This caused damage to the hood, the other driver did not stop. While the 2024 model vehicle is not listed in NHTSA Campaign Number: 25V060000 (STRUCTURE) recalled on the 2022 model, GM lists the same part number for the 2022-2024 models, therefore the recall should include these years as well. The failure mileage was 27,500.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673780July 15, 2025
ENGINE, UNKNOWN OR OTHER
The radiator needs to be replaced on the 3.0L due to a leak in the seam of the radiator. The dealer has stated that they have had a few in the shop recently due to the same issue. There are a lot of complaints online that have the same issue, and customers have had to pay $3000 for the same replacement.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673261July 14, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2024 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 local dealer was contacted, and it was confirmed that the part was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673287July 14, 2025
POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER
The contact owns a 2016 GMC Sierra 1500. The contact stated while driving at various speeds and depressing the accelerator pedal, the vehicle hesitated while responding, shuddered, and made an abnormal sound. The vehicle was taken to the dealer, where it was diagnosed with torque converter clutch shudder and failure. The dealer determined that the torque converter clutch needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and offered to partially cover the cost of the repair. The failure mileage was approximately 66,456.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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