2024 GMC SIERRA 1500 Complaints

I was driving on the highway with the cruise control engaged. An instruction came on the information center telling me to push the start button, while I was driving at highway speeds. Then the transmission downshifted numerous times violently the last few times. By the tachometer the engine was doing 6000 rpm. I pulled over and the start button would not shut down the engine until about the third time I pushed it. Then it would not restart. I had the vehicle towed to the dealership and they told me that they had gotten the truck to start but that the engine seized while pulling it into the repair bay. I had followed the recall directions that they had sent me for the recall on the 6.2 liter and they said that mine was fine and that I should use thicker oil from now on. I had done that but still had ths failure, which as a person that has worked on mechanical equipment my whole life, this failure is violent.

The contact owns a 2024 GMC Sierra 1500. The contact stated that there was an unknown failure with the front and rear cameras. The driver's and passengers' side mirror indicators remained illuminated but occasionally failed to operate. There was a glare that was shining into the vehicle while it was raining and driving at night. The vehicle was taken to the local dealer, where it was diagnosed that an unknown module was not operating as needed. The rear wiring harness was replaced. The seat module and transmission were repaired, but the failure recurred. The manufacturer was contacted, and a case was opened. The Attorney General was contacted and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 9,000.

Transmission started hash shifting and at highway speed it felt like the dark converter kept falling out of lock up. Stopped and took picture of service light

The contact owns a 2024 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); and the vehicle was taken to the dealer, where the contact was informed that no repair was needed, upon inspection. The contact stated that while driving at 70 MPH, the vehicle stalled. There was no warning light illuminated. The contact was able to pull over to the side of the road. The vehicle failed to restart and was towed to the dealer, where it was diagnosed and determined that the engine had failed and needed to be replaced. The vehicle was in the process of being repaired free of charge. The contact related the failure to NHTSA Action Number: RQ26001 (Engine). The manufacturer was notified of the failure, but no vehicle rental assistance was provided. The failure mileage was approximately 45,000.

I get alert saying low oil pressure and the truck turned it's self off and won't start back up. And I got car's and 18 wheelers coming up from behind. They're not paying attention to my emergency lights flashing. It did this twice on me, first time in my neighborhood and the second time on major road with a lot of traffic. I call GMC Corporate office and they know about the Recall on the 2024 GMC Sierra engine cutting off. I was told I need to get a picture or video of the dashboard say low oil pressure and video with me trying to start it back up. I guess I'll have to get hit or kill for them to replace the engine. I have no documentation because I have no picture or video. Didn't know I was supposed to take a picture or video.

1) In May of 2025 I attempted to have the dealership complete the recall which the GM app told me to schedule. Related to the L87 engine failure. According to their own document my engine manufacture date was to be replaced a defective. The dealer told me that there was "no resolution for the issue and turned me away. (see attachments) 2) In June GM changed the procedure adding the PICO test. (see attachment) 3) In October I received the official recall notice and scheduled the test. At the prior service visit I had the dealer give me back the old oil filter. I took it apart and found metal fillings in it. I reported this to the dealer. The truck had the PICO test and passed. They told me that "the filter did its job and the metal in it was normal wear and tear". They replaced the oil cap and filled it with thicker oil. I was sent on my way, told to call if I had any issues. 4) On 2-6-25 while driving 65 MPH on the highway, the engine just shut off without warning. The dash displayed "press start again" while I was traveling at 65MPH. I was able to pull to the side and restart the engine. Service was scheduled and performed on 2-10-26. They found no codes in the computer and could not find the issue. 5) On 2-13-26 while driving 75 on the interstate the engine stopped, the display read "press start again". I was able to coast through traffic and got to the shoulder. After some time and playing with the buttons I was able to get the truck into park. Then I started the engine. I made it off the freeway and onto a side road. I drove a few miles further and stopped for a stop sign. The truck was again dead, displaying "press start again". After several attempts and my vehicle in traffic, I got it to start. It drove for a mile more and the truck was dead. I had it towed to the dealership where they are working in it. It requires a new engine. 6) GM failed and endangered my family while traveling at freeway speeds. They should buy back their failure.

The engine lost power on the Hwy. Resulted in having to tow the vehicle to the dealership for an engine replacement. The truck is a 2024 with only 20K miles. There were no alerts within the interior to make me aware there was a problem. The engineer starting make a knocking sound at the time of failure. I had just gotten off the interstate when it failed. I spoke to a representative at the dealership and they informed me that the same engine will be installed, with a new oil type. I'm writing this given this will diminish the value of the truck, and I have to be worried about the engine failure happening again. Next time it could happen on the interstate with loss of power. I can't trust that to happen.

The contact owns a 2024 GMC Sierra 1500. The contact stated that while driving at 67 MPH, the transmission shifted to neutral(N) unexpectedly. In addition, the vehicle failed to accelerate as intended while depressing the accelerator pedal. The contact attempted to drive the vehicle off the road. A passerby slowed down and allowed the contact to move over to the side of the road. The engine seized, and the vehicle stalled between the shoulder and the line of the left lane. The check engine warning light illuminated, and the messages "Battery Low" and "Reducing Features to Save Battery" were displayed on the instrument panel. The contact called a friend who towed the vehicle to the dealer. The dealer was informed that the engine had failed and needed to be replaced. The vehicle remained at the dealer unrepaired. The contact stated that due to the failure, the contact no longer felt safe while driving the vehicle. The manufacturer was notified of the failure. The failure mileage was 52,680.

My truck started knocking and while driving home and it died on me in the middle of a busy street and would not start. I waved down a police officer and he kept me safe from cars hitting from behind.Come to find out it was the bearing rod and now I’m getting my engine replaced. My truck is a 2024 gmc sierra with 9,000 miles on it.

On 5 Feb 2026 I was starting my 4-hour drive back home. 15 minutes into my drive my truck lost power, several lights and the engine light came on. Truck was sputtering and making harsh engine noises and shut off on me. I was forced to exit Loop 2 (a major highway). Once I was able to restate the truck I went straight to the dealership. This truck had the recall done 15 Oct 2025. However, this issues still occurred. The motor gave out. Truck is 83K in mileage. well under 100K. Cost estimate is $6.5K. The technician informed me that a lifter collapsed in cylinder 5. This is clearly still part of the GMC recall issue for the 6.2L engines. What is my next step in this process. If I knew there was a major issue with these Trucks, I probably would not have purchased it. All maintenance has been done with same dealership to keep all service records excess able.