2024 GMC Sierra 2500 Driver assistance Problems

Unexpected braking at highway speeds. This has at least 50 times at highway speeds. The truck has experienced repeated false Forward Collision Alerts and un-commanded Automatic Emergency Braking events. Adaptive Cruise Control frequently detects roadside objects and vehicles in adjacent lanes, particularly on curves. The vehicle has never had windshield replacement, front-end damage, suspension modifications, or aftermarket accessories. This is creating a safety hazard because the truck brakes unexpectedly in traffic at any speed.

NHTSA ID

11742824

Incident

Jun 8, 2026

The contact owns a 2024 GMC Sierra 2500. The contact stated while reversing, the rear-view camera displayed a blank screen. The 4WD system engaged unintendedly, and the park assist sensor was inoperable while an unknown message was displayed. Additionally, the vehicle lost motive power while driving. The check engine warning light was illuminated. The vehicle was towed to the dealer, who replaced an unknown module and reset the computer, but the failure persisted. The contact stated that the vehicle was taken to the dealer five times, but the failure recurred after several unknown repairs. The vehicle was not repaired. The contact had requested for a buyback from the dealer, but no assistance was provided. The manufacturer was made aware of the failure. The failure mileage was approximately 8,000.

NHTSA ID

11730404

Incident

Oct 1, 2024

Mileage

8,000 mi

On 3 separate instances the past few months the truck slammed on brakes for no apparent reason. And 2 separate times the past week or so the truck suddenly and uncontrollably accelerated — first at gas a station convenience store and almost ran over old lady, secondly while waiting line on arterial entrance ramp!

NHTSA ID

11717814

Incident

Feb 5, 2026

The contact owns a 2024 GMC Sierra 2500. The contact stated that while driving at an undisclosed speed and approaching a stop, the contact simultaneously depressed the brake pedal and accelerator pedal, causing the vehicle to move forward and to stop simultaneously. The contact stated that the pedals were significantly close to each other. The contact’s foot was sliding off the pedals. The vehicle was taken to the local dealer, and the contact requested for an adjustment of the pedals. The vehicle was not diagnosed or repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 10.

NHTSA ID

11672512

Incident

Feb 1, 2024

Mileage

10 mi

The side mirrors have spider cracked from some type of electrical issue. This is the 2nd time this happened and it burns both mirrors at the same time. The mirrors become unusable and it appears The dealer replaced them under warranty the first time and the second time they said it is out of warranty so I had to pay out of pocket.

NHTSA ID

11644813

Incident

Jan 28, 2025

The systems have become unavailable. Took to dealership and they were told it just needed a software update. Dealer performed update GM sent and did not work. Dealer was told GM engineers would need to find a fix. I complained to GM and asked that they replace the cameras, especially because the vehicle is under warranty, and I was told no because that won't fix the issue. They don't even know what needs to be done to fix the issue though, but won't try a camera swap. They told me I need to take it back to the dealer so they can run diagnostics on it when the issue happens. I don't know what is so hard to understand that the issue is always there; the systems don't work and my dash always has the light the forward collision system not on and given a message when I start the truck that it is not available. This began to be an issue around 9000 miles. It first started by saying window camera blocked due to frost, but when it was clear, and I cleaned every camera and sensor, it still would not come on. This was 1.5 months ago. I don't understand why they are not trying to expedite fixing this safety issue. The dealer can't do anything until GM tells them to change out camera or send another fix, but there is no software fix available. I can forward emails between myself and GM and you can clearly see they are not listening. If that would be helpful, please let me know how to forward them.

NHTSA ID

11642080

Incident

Jan 5, 2025

First date was 04/23/2024 my truck went into limp mode with an alert reading engine and transmission control module problem. Brought it in and they reset the sensors. Shortly after the alert warning goes off again and I turn the engine off and start it back up. It cleared the alert, I brought it back in on 06/15/2024. They reset sensor and fixed a recall on tailgate. I picked up truck, drove it for 2 months and TCM warning came up and threw truck into limp mode while pulling a 2 horse trailer. It turned a 3 hr drive into a 6 hr drive. I brought back to dealer on 8/19/2024 they had it for 4 days and they notified me that this is an on going problem. It is a transmission solenoid valve stuck open and they ordered the part and told me it could be months before the part gets here due to the ongoing backorder from all the other trucks that have the same problem. I use this truck for work and leisure to pull my boat and 2 horse trailer and now I have a vehicle payment to make and no vehicle to use. I cannot use it to work or anything else because it is at the dealer for an unspecified amount of time. I have read online that this is a major problem with this truck and GMC as well as the dealerships know about this problem and they still sold it to me. There are so many complaints online about this GMC 2500 AT4 truck problem that GMC should stop selling this truck.

NHTSA ID

11610528

Incident

Apr 23, 2024

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.

NHTSA ID

11579348

Incident

Mar 25, 2024

Mileage

100 mi

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.

NHTSA ID

11577009

Incident

Mar 12, 2024

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.

NHTSA ID

11547373

Incident

Sep 28, 2023

Mileage

1,000 mi

The Column Shifter that is installed on all 2024 GMC Sierra 2500HDs and 3500HDs poses a potential safety risk to its passengers and other drivers on the road. When the column shifter of the vehicle is in the standard drive position the shifter covers part of the screen and the direct path to the radio volume control dial and infotainment home button. It has been found and replicated that attempting to interact with the infotainment screen UI and the home button/volume control dial the driver may easily accidentally bump the shifter into the neutral position. Bumping this 8000lbs+ vehicle into neutral unintentionally can be extremely dangerous to its passengers and fellow motorists especially when hauling a heavy trailer or load like heavy-duty pickup trucks are designed to do. Bumping the truck into neutral can allow the truck to lose its acceleration capabilities and degrade braking capabilities as the engine would be disconnected from the drive wheels, limiting engine braking and exhaust braking. This kind of braking is commonly used to help stop the truck with heavy trailers and loads. This problem has been commonly referred to in multiple Facebook groups relating to the 2024 GMC Heavy Duty Truck. I personally have not had it inspected by any third party as there is not much they can do to remedy the issue. I personally recommend that General Motors redesign the column shifter in these trucks shortening it to come no further than the diameter of the steering wheel eliminating any interference with the infotainment system and the home button/volume dial. GM shall replace this updated shifter free of charge in all trucks just recently built. For GM's sake, it is important that this issue is remedied ASAP as the truck just began production and there is a limited amount on the road. This is available for inspection upon request.

NHTSA ID

11527622

Incident

Jun 18, 2023