2024 GMC Sierra 1500

2024 GMC Sierra 1500 6.2 v8 had a full engine seizure while driving on the freeway. All prior recall actions had already been met (scoped and upgraded oil), within 60 days of dealership review the engine stopped working. Recall 25V-274 L87 Engine Loss of Propulsion. After a 5 hour event on the side of the road AAA towed the vehicle to the dealership where I was told it would be many months before this is returned. It took many weeks for GM to just review and approve any next service (engine needs). At this point I'm told there are 181 people also in line for an engine and they can't see where I might be in that line. So we wait.

On XXX I started on a 3 hour trip with my daughter in the truck. My vehicle lost power and started knocking in the engine compartment. We were going over a very big Bridge([XXX]) from [XXX] to [XXX]. I had to coast off the highway and made it to a park. Truck would not restart and would not go into neutral. Waited 5 hours for AAA and was drug onto the flat bed truck because it would not go into neutral. It was then towed to the dealership(Union Park GMC) in [XXX], where they had to drag it off the flat bed truck. Truck was evaluated and determined by the technicians that it needed a new engine(6.2 L V8). Engine was tested and passed in October 2025. Still waiting on a new engine to be installed(today is XXX). GMC knows there are issues with these engines failing and continue to sell to the consumer. I am currently paying for a truck that I am not able to drive. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I was driving at normal highway speed. I exited the highway and started to deceleration for an upcoming traffic light. The engine started making a lot of noise. The 6.2L engine has 31k miles on it. Oil changes have been completed at the dealership where I purchased the sierra Denali. I called the dealership and the service writer could hear the engine noise. He asked if I could get it to the dealership which was about 15 miles away. I tried but the truck stopped about 7 miles from the dealership. They told me to call the onstar service and get a tow. The dealership said it will take about six weeks to get a new engine. In the meantime I'm making payments on an eighty thousand dollar vehicle I can't use. Someone needs to hold GM accountable for the lack of urgency in getting this problem fixed!

The vehicle suffers from a persistent transmission defect including shuttering bucking slipping torque converter failure valve body failure twice metal debris improper down shifting chirping noises and related liability and safety issues. The vehicle has undergone multiple unsuccessful repair attempts at authorise GM dealerships. These repairs include torque converter replacement valve body replacement twice solenoid replacement fluid services software updates. The transmission problems have persisted despite these efforts and the vehicle has been out of service for more than 22 business days including a breakdown driving to Florida. I have filed a claim through GM but it seems like it just keeps getting pushed further and further away this is a serious safety issue as I fear for those driving around me and myself that I may cause an accident with the bucking slipping and failure to operate properly on the road.

This vehicle became subject to a manufacturer safety recall requiring complete engine replacement. The engine failure has been confirmed by an authorized GMC dealer, and the vehicle has remained out of service for more than one month while awaiting the recall remedy. The dealer has advised that the repair has been escalated through GM's SPAC (Service Parts Assistance Center) process because a replacement engine is not available. General Motors has also confirmed there is currently no estimated delivery date or estimated completion date for the repair. As a result, the recall remedy is effectively unavailable, and the vehicle remains unusable for an indefinite period. Although a temporary loaner vehicle has been provided, it is not functionally comparable to the recalled vehicle and does not provide the towing capability and utility required for its intended use. The vehicle was inspected by an authorized GMC dealer, who confirmed that engine replacement under the recall is required. The vehicle remains available for inspection. My concern is not only the original safety defect but also the inability to obtain the recall remedy within a reasonable timeframe. There has been no estimate of when replacement engines will become available, leaving the vehicle out of service indefinitely. I am submitting this complaint to document the delay in completing the safety recall and to request that NHTSA review whether the recall remedy is being provided in a timely and effective manner.

My 2024 GMC Sierra Denali Ultimate 1500 experienced a catastrophic powertrain failure that created a serious safety hazard. On XXX, while driving at highway speeds, the truck unexpectedly shifted into neutral, causing an immediate loss of propulsion. During this event, the electrical system was also affected. The battery power dropped, power steering assistance was lost, and due to the electronic push-button start system, the vehicle could not be restarted while in this condition. This placed me and surrounding motorists at significant risk of a crash. I initially brought the vehicle to Point GMC, where I was advised no issue was found. After the problem continued, I returned on XXX and a dealership technician rode with me. During the test drive on [XXX], the truck again shifted into neutral, confirming the defect. The vehicle was then towed to the dealership, where diagnostics revealed DTC P0016. I was informed the engine had seized and required a complete engine replacement. The engine was replaced by an authorized GMC dealership in New Jersey. After only about 2,000 miles, the check engine light returned and the vehicle began experiencing additional electrical issues. This is a Denali Ultimate, the highest trim level, with advanced electronic systems, making these recurring failures especially concerning. To date, the vehicle has been inspected by three authorized GMC dealerships, and I have opened multiple cases with GMC Corporate. Despite repeated repair attempts, the manufacturer has not provided a permanent resolution. I continue to experience recurring engine and electrical issues and no longer have confidence in the safety or reliability of this vehicle. Given the repeated failures, loss of propulsion, loss of steering assistance, inability to restart the vehicle, and lack of resolution after multiple dealership visits and an engine replacement, I believe this matter warrants investigation by NHTSA. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2024 GMC Sierra 1500 equipped with Maxxis Tires, Tire Line: Bravo HT-750, Tire Size: 255/80/R17, DOT Number: 120NK10015028. The contact stated that after the front driver 's-side tire became flat, the contact discovered that the spare tire originally equipped on the vehicle failed to fit the front wheels but did fit the rear wheels. The vehicle was towed to the dealer, who determined that the spare tire failed to fit the front driver's side wheel due to a factory-installed brake modification, causing the spare to not fit over the front brakes. The dealer replaced the front driver's side tire. The manufacturer was made aware of the failure. The tire failure mileage was unknown. The vehicle failure mileage was 14,000.

The contact owns a 2024 GMC Sierra 1500. The contact stated that while driving approximately 65–70 MPH, the bumper air deflector, metal tabs, and screws detached and struck the front windshield. The vehicle was taken to the dealer, and the contact was informed that the repair was not covered under recall. The vehicle was not repaired. The contact referenced an unknown recall; however, the VIN was not associated with a recall related to the failure. The manufacturer was made aware of the failure, and a case was filed. Additionally, the contact was informed that the repair was not covered under warranty or recall. The failure mileage was approximately 40,000.

The contact owns a 2024 GMC Sierra 1500. While shifted in reverse, the back over prevention camera intermittently displayed a black screen accompanied by two failing camera symbols. During the most recent failure, the camera displayed a blank image, causing the vehicle to crash into the garage door, causing damage to the garage door. The failure was intermittent. No injuries were reported. A police report was not filed. Medical attention was not needed. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.

Upon driving on the highway, I was doing about 73mph, something back flew up and smacked the windshield then the car behind me ran over that piece. After stopping and looking I realized the top trim to the grill flew off. There is no recall for this even though this is a safety concern. If I was near a sidewalk to a motorcycle behind me this could have injured someone severely. Upon research I found that there is a recall for the 2022 model for the same problem (Recall N242490120), this needs to be extended tot he 2024 model as I have another truck (same year and model) that is showing signs of the same issue. This is a huge safety concern.