2024 GMC Sierra 2500 driver assist problems

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

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 complaint #11742824 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

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 complaint #11742824 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: WARNINGS

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 complaint #11742824 — an unverified report by a vehicle owner.

BACK OVER PREVENTION

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 complaint #11730404 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

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 complaint #11717814 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

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 complaint #11717814 — an unverified report by a vehicle owner.

LANE DEPARTURE: BLIND SPOT DETECTION

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 complaint #11644813 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: WARNINGS

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 complaint #11642080 — an unverified report by a vehicle owner.

LANE DEPARTURE: WARNING

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 complaint #11642080 — an unverified report by a vehicle owner.

LANE DEPARTURE: ASSIST

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 complaint #11642080 — an unverified report by a vehicle owner.

LANE DEPARTURE: BLIND SPOT DETECTION

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 complaint #11577009 — an unverified report by a vehicle owner.

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.

NHTSA complaint #11577009 — an unverified report by a vehicle owner.