GMC Sierra Complaints (2024)

545 consumer complaints on file.

#11579348March 25, 2024
SERVICE BRAKES, VEHICLE SPEED CONTROL:ACCELERATOR PEDAL
The contact owns a 2024 GMC Sierra 2500. The contact stated while stopped at an intersection, the vehicle moved forward while the brake pedal was fully depressed. The contact also stated on a level surface, the vehicle accelerated about 4 MPH without the accelerator pedal being depressed. The failure occurred on several occasions. The vehicle was taken to the dealer where the failure was duplicated; however, the dealer stated that the vehicle operated as designed. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 100.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11578846March 22, 2024
ELECTRICAL SYSTEM, EXTERIOR LIGHTING
Component or system failure: Complete failure of the headlights and interior lighting, including the dashboard after post remote start - ignition on. Safety risk: Headlights and other interior lighting would not activate leaving the vehicle completely dark. The only remedy was to completely restart the vehicle. Reproduced?: No. The vehicle is brand new with less than 100 miles. Inspected?: No warning messages: there were unpresented in the DIC. However, the vehicle also would not shift from drive.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11578450March 20, 2024
UNKNOWN OR OTHER
GMC has a problem with the electronic brake controller on their 2024 Sierra 2500HD and 3500Hd trucks. All trailers are required to have trailer brakes. In addition the trailer must be equipped with an auxillary battery to activate the emergency breakaway brakes. If the voltage on this battery is higher than the towing vehicle battery, the vehicle controller can display a trailer wiring fault display. When this happens there are no brakes on the trailer. This fault happens intermittantly and can last between 10 seconds to 30 seconds. We constantly have this problem with our vehicle. On two occasions we were in an emergency situation towing a12,500 lb load and had no brakes. This is A SEVERE SAFETY CONCERN. The GMC dealer stated that the problem is because our trailer uses a regular car battery to work the hydraulics and the brakes. They stated that the controller pings the trailer to see is anything is connected and that the car battery can interfear with this signal. When this signal does not return the controller senses that no trailer is connected and disables the trailer brakes. The trailer that we have is new and it is wired according to industry standards. Thre are thousands of trailers on the road that have this configuratiion. We have inspected the trailer and cannot find wiring problems. We have towed the same tyrailer with two different trucks and do not have this problem. A quick search on the internet will reveal that many other people are experiencing the same problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11577863March 17, 2024
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
The infotainment systems audio while driving decreases so much that you have to increase the volume to hear it and then will randomly increase to the correct volume level without warning and then decrease again.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11577009March 12, 2024
ELECTRICAL SYSTEM, LANE DEPARTURE: BLIND SPOT DETECTION, BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING
While driving both drivers and passenger side blind spot warning lights flash on and off when no cars are near. The problem is worse at night when pulling a trailer. The lights sometimes stay on or starting flashing on both side causing a significant distraction.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11575496March 5, 2024
ELECTRICAL SYSTEM
Hello, I purchased my 2024 GMC 3500 AT4 Seirra late October 2023. Since the purchase date, I have been informed by motorist while at intersections my tailgate was down. I thought I was doing something wrong. On 3/3/2024 I was preparing to wash my truck and noticed my front amber lights were on surrounding my headlights. the vehicle was off, and my keys were in the house. Then my tailgate opener activated on at least 10 - 12 times. The tonneau cover is tight so the tailgate can need assistance opening. Nevertheless, the tailgate has opened on a number of occasions and my two front amber lights came on at least once. I reported this to my dealership on [XXX]. they said my truck has not been recalled yet but to watch this and if it progresses to call them. I noticed a small dent in the top rail of the tailgate on [XXX]. I have yet to put anything in the bed of the truck or even install a hitch in the receiver. I believe the tailgate had to be bumped when it was down by another vehicle, and this is absolutely related to the tailgate malfunction. since I haven't used the bed of the truck. Moreover, I feel GMC should be held responsible for the repair or replacement of my tailgate. Regards, [XXX] 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
#11575182March 3, 2024
SUSPENSION
Purchased 2024 GMC Sierra 1500 Pro 2/28/2024 with 6 miles on it. Drove vehicle home (20 miles). Picked up and dropped off Grand Daughter from school. Proceeded to my Mom's house and took her for a ride then came home. Next afternoon went to take out garbage and noticed puddle by passenger rear tire. Got under truck and found shock to be completely wet. Called Dealer and made appointment to bring truck in next morning. Brought truck in next day and Dealer confirmed that shock was blown. Shock is not in stock but was ordered. Currently waiting for delivery to set up appointment to replace shock (Only the one that is blown of course). Truck now has 108 miles. 60 of those miles are driving from, back to and back home from the dealer. Now it sits with cardboard under it and once repaired, I have the bonus of scrubbing multiple oil slicks off of my driveway. Glad I wasn't towing or carrying a payload...
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11573799February 24, 2024
STRUCTURE:BODY
UNKOWN. It came like that. I took the truck to the dealership to be inspected and I was told that it was a manufacturing problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11571291February 11, 2024
STRUCTURE:BODY
Tailgate opening on its own when vehicle is in park. Has done this when engine is running in park and with engine shut off in park.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11570814February 8, 2024
BACK OVER PREVENTION
The contact owns a 2024 GMC Sierra 1500. The contact stated while reversing in a rural area, the back-over prevention camera failed to display an image. The vehicle was taken to the local dealer who stated the vehicle was operating as designed. The vehicle was not repaired. The contact independently added lights to the rear of the vehicle however, the failure persisted. The contact referenced NHTSA Campaign Number: 22V709000 (Back Over Prevention) as a possible solution however, the VIN was not included in the recall. The manufacturer was notified of the failure and explained that the supplier was changed in 2023 and the camera was operating as designed. The failure mileage was approximately 12,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11569499February 2, 2024
ELECTRICAL SYSTEM
[XXX] has a trailer brake control module issue that causes the trailer brake to periodically disengage and reengage. Unfortunately, I had to drive across the country on a military PCS move with this intermittent failure. GMC has provided numerous surveys to ask about my experience with my new GMC. Overall, the vehicle adequate, and in each survey I have annotated this issue. However, it does not appear the issue is being taken seriously as I have not seen a recall. A trailer brake that intermittently fails is extremely dangerous. 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
#11569113January 31, 2024
UNKNOWN OR OTHER
The driver's side floor mat will not stay in place because the device that is supposed to hold it in place is broken. The floor mat is now able to move forward and interfere with the function of the brake and/or accelerator. Both the dealership (Castle Rock GMC, Colorado) and GMC Customer Care (Case #: 91-11325687695) have ignored all requests to address this and other issues. I have also written letters to GMC Corporate and the Castle Rock GMC General Manager, both of which were also ignored.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11566359January 18, 2024
ELECTRICAL SYSTEM:ADAS:BLINDSPOT:SENSORS
The contact owns a 2024 GMC Sierra 2500. The contact stated while driving at an undisclosed speed, another vehicle drove by on the driver's side of the vehicle, and the blind spot alert light illuminated on the passenger's side of the vehicle, even though the vehicle was present on the driver's side. The contact also stated that the failure only occurred when the Adaptive Cruise Control was activated. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was taken to the dealer, who was able to duplicate the failure but was unable to provide a fix. The vehicle was not repaired. The manufacturer was notified of the failure but did not assist. The failure mileage was 3.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11561998December 27, 2023
ENGINE
Vehicle would crank over but not start. Diagnosed as Electronic Control Module by dealer. Part ordered on 12/6/23, GM does not have part available as of 12/27/23, vehicle unable to be driven.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11560701December 18, 2023
STEERING
The vehicle has had steering and alignment issues since the day I purchased the truck. The steering wheel is not centered. The steering wheel is always turned to the left but the vehicle pulls to the right. I have had it at my local dealership five times and they have confirmed what I have described but they are not able to fix the issue fully. They have rotated the tires 3 times and have aligned it all five times. The vehicle will be good for about 100 miles and will go out of alignment again. The dealership explained to me that they are experiencing this with all 2024 Chevy and GMC heavy duty trucks. The vehicle is very difficult to keep straight especially at higher speeds on the interstate. I am part of a 2024 Chevy and GMC owners facebook page and hundreds of consumers are complaining of the same issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11559720December 12, 2023
SERVICE BRAKES
Towing an RV with solar panels. When the trailer battery becomes fully charged and has a higher charge than the vehicle battery, the trailer brake control module becomes disabled. When this occurs, you have no trailer brakes. Combined weight of truck and RV exceeds 20,000 pounds. Trying to stop with only truck brakes is dangerous, especially if you are on a decent. I not only believe this to be a safety issues, but somebody is going to get killed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11556441November 22, 2023
ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL
The contact owns a 2024 GMC Sierra 2500. The contact stated while towing a trailer and driving down a hill at approximately 40 MPH, the integrated trailer braking system error message was displayed, and the trailer braking system failed to activate. The vehicle was later taken to the local dealer who was unable to replicate the failure and failure was found. The dealer later informed the contact that the solar panel system on the trailer might have caused the integrated trailer braking system to malfunction. The contact stated that after turning off the solar panel system the failure persisted. The cause of the failure was not yet determined. The manufacturer was not contacted. The failure mileage was 800.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11551398October 23, 2023
ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL
When I connect my 2024 GMC Sierra 2500HD to my camping trailer that has a solar panel and solar charge controller, it causes the factory-installed brake controller inside the truck to malfunction. The trailer brakes connect and disconnect 4 times a minute sending alerts to my dashboard. This is dangerous. My trailer weighs up to 14,000 pounds and would have to rely solely on the truck brakes to slow to a stop. GM put out a Document ID: 6379278 / #23-NA-113 "Information on Trailer Brake Disabled or DTC Stored". However, there is no fix. The GMC dealer said they can't find the service bulletin?! Please make this issue a RECALL. I bought this truck to exclusively tow a trailer and now I can't.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11548306October 4, 2023
UNKNOWN OR OTHER
Upon starting our 2024 GMC Sierra 2500HD after towing a camping trailer for approximately 200 miles, the following error notifications would cycle every 20 seconds to 5 minutes: "Check Trailer Wiring" "Service Trailer Brake System" The trailer brake would become disabled after these errors, and sometimes would connect with a "trailer brake connected" message, only to repeat every 20 seconds to a few minutes later. During the 60 minutes in which I drove to an RV dealership to have the problem looked at, on multiple occasions, I had no trailer brakes when braking, or had no trailer brakes until the trailer brakes suddenly connected at below the speed of 35 - 25 MPH. GM has acknowledged document ID: 6420021 and bulletin #23-NA-149 that this could happen when pulling a trailer with a battery, generator, or solar charger that has a higher state of charge than the vehicle battery. This is an extremely unsafe condition that could easily cause a rear-end accident or a jackknife condition of the vehicle/trailer combination. GM has known about this issue since at least June of 2023, and as of September, they have an updated trailer brake controller that is supposed to correct this issue. There should be an immediate recall of the vehicles involved to have the trailer brake module replaced with the updated part.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11547373September 29, 2023
ENGINE, ELECTRONIC STABILITY CONTROL (ESC), LATCHES/LOCKS/LINKAGES:TAILGATE:LOCK
The contact owns a 2024 GMC Sierra 2500. The contact stated that while driving 30 MPH, the check engine malfunction and Electronic Stability Control system malfunction warning lights illuminated. The contact was inadvertently locked out of the vehicle and was unable to open the tailgate. The contact disconnected the battery to cancel the warning lights; however, the tailgate still failed to open. The vehicle had not been taken to the dealer to be diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 1,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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