GMC Sierra Complaints

15,732 consumer complaints on file.

#11690463September 30, 2025
ENGINE
The check engine light is illuminated. Diagnostic information from the OnStar system indicates a fault within the engine cooling system. The engine cooling fan remains engaged continuously, suggesting a possible malfunction with the cooling system components or related sensors.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11690539September 30, 2025
ENGINE
2022 GMC Sierra has a P1098 code. This code has to do with a faulty coolant control valve. This causes the engine fan to run constantly and displays on the screen "Reduced Acceleration, Drive with Caution". The truck does not have any power when this happens, which is 99% of the time. This makes using the truck very difficult in high traffic areas and pulling a loaded trailer. Apparently GM knows about this and is not getting the part to correct the problem to the dealerships in a timely manner. My truck was diagnosed with this problem over 2 weeks ago and still waiting on the part.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11690577September 30, 2025
SUSPENSION, POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT
The contact owns a 2024 GMC Sierra 1500. The contact stated that while driving approximately 65 MPH, the vehicle rolled over a bump in the highway, and the message to "Slow Down" was displayed on the instrument cluster. The contact heard an abnormal metal-on-metal sound coming from the vehicle. The contact had taken the vehicle to a local dealer who diagnosed the vehicle and determined that the supports for the differential and the rear axles had been improperly attached and had become loose. The contact had asked the dealer if the repair could be covered under warranty, and was advised that the repairs were not covered. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 48,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11690612September 30, 2025
SERVICE BRAKES, HYDRAULIC
The contact owns a 2013 GMC Sierra 3500. The contact stated that while driving at 50 MPH, the ABS independently engaged. A dealer was contacted. The vehicle was taken to the dealer to be diagnosed; however, the diagnostic result was unknown. The vehicle was not repaired. The manufacturer was not notified of the failure, and informed the contact that the VIN was not under recall. The approximate failure mileage was 14,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11690613September 30, 2025
STRUCTURE, SUSPENSION
The contact owns a 2014 GMC Sierra 1500. The contact stated that while driving approximately 45 MPH, the vehicle drove over a slight bump in the road. The contact stated that the vehicle bounced, and then there was an abnormal banging sound coming from the rear of the vehicle. The contact recently had work completed on the exhaust system. The contact took the vehicle back to the independent mechanic who had performed the exhaust repair. The mechanic raised the vehicle on the lift and became aware that the rear passenger’s and driver's side cross members, supports for the shock absorbers, and the rear sub frame had extensive corrosion. The contact was advised by the mechanic that the banging sound was coming from the shock absorbers striking the bed of the truck while driving over the bump in the roadway. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was 78,569.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11690628September 30, 2025
ENGINE
As I was turning left from a county road to a highway my truck died on me. I was able to push it out of the road with the help of two other motorist. This is the second time in 4 months were my truck broke down due to engine failure. I had the motor repaired the first week in June 2025 for a similar instance. My truck is at the dealership right now awaiting repair because GM will not recognize that my 2019 6.2 L87 engine has the same known defects as other 2019 6.2 L87. This is a safety issue which GM refuses to acknowledge on my vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11690268September 29, 2025
SERVICE BRAKES
My truck is experiencing the Brake Controller failures as documented in GM Bulletin N232414840 - Customer Satisfaction Program Intermittent Loss of Trailer Brakes. This problem has occurred several times over the past year. I thought it was the wiring on my trailer - so I checked and found no problems (plus it works properly on other tow vehicles). Additionally, the problem resets and works properly after turning the truck off and back on (resets the system). It then works properly until it unexpectedly disconnects again. I thought the problem was unique to my vehicle until I got online and discovered that this is a known issue for others as well (2024 GM HD trucks). I contacted my GM dealer (and GM's customer satisfaction center as noted in the bulletin) and they informed me that my truck is not covered under this recall (not one of the covered VINs). I told them that I'm having this issue and they told me to report the problem to the NHTSA. Needless to say, GM has not included all the applicable vehicles in their recall (like mine) and I need the issue corrected before it causes a serious accident.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11690271September 29, 2025
POWER TRAIN
On 9/27 the engine light went on and message transmission May not shift
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11690315September 29, 2025
BACK OVER PREVENTION
The contact owns a 2024 GMC Sierra 1500. The contact stated while reversing, the rear-view camera displayed a dimmed image, and the contact was unable to clearly see behind the vehicle while reversing. The dealer was contacted. No warning light was illuminated. The vehicle was not taken to the dealer or an independent mechanic to be diagnosed. The vehicle was not repaired. The manufacture was notified of the failure and informed the contact to report the failure to the NHTSA Hotline. The failure mileage was 14,800.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11690415September 29, 2025
SERVICE BRAKES, BACK OVER PREVENTION: WARNINGS, UNKNOWN OR OTHER
Recently, I just purchased my vehicle from Wally Edgar Chervolet with no open recalls on the vehicle. As of September 29th, 2025 for my very first oil change on the vehicle I was made aware for 4 OPEN Recalls which was told to me at the time of purchase. The dealership closed the all recalls without actually checking my make the vehicle was safe to drive. The Recall Numbers are: N252510321, N222362040, N212356230, N222357620.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11690457September 29, 2025
POWER TRAIN, WHEELS
At 12,018 miles on my 2024 gmc sierra 1500 I experienced a rear wheel lock up. I have 4wheel drive capability but I had the truck in rear wheel drive only. Thankfully I was not going fast at the time. I was going between 35-45 mph when experiencing the lock up. As I was going down a straight away, I experienced a rear wheel lock up of my 10L80 transmission. My tires were squealing like crazy. I pulled off onto the side of the road. After shifting to reverse and then park and then drive the problem corrected itself. When I brought it into the dealership, they could not find anything wrong with it. Additionally my trucks software was up to date and not lacking any updates. I don’t drive this truck very far and only drive about 150 miles a week. A rear wheel lock up of this magnitude at this low of miles is concerning. I’m not rough on the truck by any means. It’s more so a family vehicle than a hauler. I have got the truck serviced 3 times since I bought it for regular maintenance so that’s not an issue either. There were no warning indicators that this problem was occurring when I experienced the rear wheel lock up. This could have resulted in a collision with vehicles around me if I had not been aware of what was occurring.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11690173September 28, 2025
UNKNOWN OR OTHER
UNKNOWN: Transmission/Torque Converter etc. like driving over "rumble strip. shuddering (rumble strip feel, shake), when it happens (e.g., during light acceleration between 25–80 mph)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11690071September 27, 2025
STRUCTURE:BODY
Water leak at the rear window leading to mold growth. Continues to leak after repaired twice by dealership.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11689848September 26, 2025
AIR BAGS, UNKNOWN OR OTHER
I tried to honk the horn when a car started to come into my lane and discovered that it was not working. I took it to the dealership, and they said it needed a new steering wheel as the contacts that operate the horn were faulty. they told me that the steering wheel airbag would not be operational due to this problem until it was fixed. This is a 2022 pickup with only 10,000 miles on it. I’ve never had to use the Horn before I, so to discover that the issue is pretty serious was disconcerting, and of course my 36 month bumper-to-bumper is used up. This vehicle is basically brand-new, and there should be a recall on this vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11689905September 26, 2025
ENGINE
Engine misfiring and rough idle with occasional flashing engine light. Dealer said no codes to know what to look for despite replicating issue. Eventually it threw a Cylinder 5 misfire and thus GM dealer was able to look further. They found metal in oil pan and concluded a bearing issue and would need to replace engine.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11689936September 26, 2025
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:ROTOR, SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:PADS
The contact owns a 2022 GMC Sierra 1500. The contact stated that upon starting the vehicle, the brakes warning light illuminated. The vehicle was taken to the dealer, who diagnosed failures with the rear brake rotors and brake pads. The vehicle was repaired. The manufacturer was notified of the failure, a case was opened, and the vehicle was repaired at no cost. The failure mileage was 16,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11689965September 26, 2025
UNKNOWN OR OTHER
The Onstar system and Wifi connectivity stopped working over a week ago. The vehicle is less than two-years old, but it had three recalls which we took it in for this past week. We were told by the GMC dealership that one of the recalls would correct the problem with the Onstar and Wifi connectivity. However, it did not and now we are being told that the Onstar module needs to be replaced, and the dealer says it isn't under warranty. GMC has tied the warranty of the Onstar module to the miles instead of the time in-service. Many other customers are experiencing the same issue. GM markets Onstar as one of their safety features and as such repairs should be covered by the manufacturer.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11689336September 24, 2025
ENGINE
- On 9/23/2025 while driving down the main street, the vehicle unexpectedly shut down (engine stopped running) and would not restart. The vehicle is currently at Elevation GMC (Boone ,NC) waiting to be diagnosed. - Safety was put at risk by the vehicle unexpectedly shutting down in the middle the of rush hour traffic and not being able to be moved. - When it is was towed into the dealership and explained to the service manager what happened; she said "there is a known problem with the gear select lever losing communication with the truck and not knowing what gear it is in". - As of 9/24/2025; dealership has not looked diagnosed what the problem is/was. - There were no prior warning messages before the engine shut down.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11689345September 24, 2025
STEERING, FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP
The contact owns a 2014 GMC Sierra 1500. The contact stated that while driving approximately 25-30 MPH, the power steering became inoperable. The check engine warning light was illuminated due to the fuel tank cap being missing. The contact stated that the failure was related to NHTSA Campaign Number: 14V246000 (Steering). The vehicle was taken to the local dealer, where it was diagnosed with a short in the steering gear. The vehicle was not repaired. The manufacturer was contacted and confirmed that the VIN was not under recall. The failure mileage was approximately 130,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11689346September 24, 2025
ENGINE, UNKNOWN OR OTHER
In the past few months this truck has been worked on twice. First was the valve body and now it is the coolant control valve. These things have caused my truck to completely slow down or shut down without warning.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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