2024 GMC Sierra 1500 engine problems

Filed Nov 4, 2026 · Engine · WY

**Subject: Complete Engine Seizure After GM Recall Remedy – 2024 GMC Sierra Denali 1500, 6\.2L V8** I am reporting a catastrophic engine failure involving my 2024 GMC Sierra Denali 1500 equipped with the 6\.2\-liter L87 V8 engine\. At an earlier date, my vehicle underwent GM safety recall 25V274\. The dealership performed the required inspection, changed the engine oil to 0W\-40, and installed the replacement 0W\-40 oil\-fill cap\. The truck was returned to service\. On October 31, 2026, I experienced an unexpected engine shutdown while driving\. The instrument cluster displayed “Please Restart Engine\.” I subsequently brought the truck to a GMC dealership for inspection\. The dealership reported finding nothing wrong and released the vehicle back to me\. On November 3, 2026, while driving home from that inspection, I attempted to pass another vehicle\. While occupying the passing lane, my engine suddenly failed and seized without warning\. The truck lost all engine power and began coasting\. I was forced to maneuver the disabled vehicle off the roadway and into a ditch\. I contacted OnStar roadside assistance, which located my vehicle and dispatched a tow truck\. The vehicle was transported back to the dealership, where it remains\. This engine failure occurred after completion of GM’s official recall remedy and immediately following an additional dealership inspection that found no problems\. I believe this incident warrants investigation under the federal safety agency Engineering Analysis EA26005, which concerns L87 engine failures following recall repairs\. The sudden loss of propulsion during a passing maneuver created a serious collision hazard\. I request that the federal safety agency investigate this failure and evaluate the effectiveness of GM’s recall remedy\. **Vehicle:** 2024 GMC Sierra Denali 1500 **Engine:** 6\.2L L87 V8 **Mileage at failure:** 40,035 **Final failure date:** November 3 2026

Filed Oct 29, 2026 · Engine · 110,000 miles · TX · fire · 1 injury

The contact owned a 2024 GMC Sierra 1500. The contact stated that while driving approximately 65 MPH, there were flames coming from the front passenger side of the vehicle. The contact immediately pulled over and exited the vehicle before the vehicle became engulfed in flames. The Fire Department was called to the scene and extinguished the fire. The vehicle was destroyed and later towed away from the scene. During the fire, the contact sustained a leg and back injury from falling while frantically exiting the vehicle. The cause of the failure was not yet determined. The contact stated that the engine installed at the time of the fire was a replacement engine installed after the original engine had seized and was replaced under the federal safety agency Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING). The failure mileage was 110,000.

Filed Oct 28, 2026 · Engine · 23,400 miles · NC

The contact owns a 2024 GMC Sierra 1500. The contact stated that the vehicle was repaired under the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling); however, the recall repair failed to prevent a failure from occurring after passing the PICO Test. The contact stated that while driving 20 MPH, there was an abnormally loud metal clashing sound coming from under the hood. The vehicle was taken back to the same local dealer where it was test-driven, and the vehicle failed the new PICO Test. The failure mileage was approximately 23,400.

Filed Oct 25, 2026 · Engine · CO

My vehicle has the loss of propulsion recall 25V‑274. It was in for service on 5-12-2025 with NO REMEDY YET on my paperwork. 8-6-2025 the truck was in for service and passed the test that would have required immediate engine replacement. As per the recall, I was given different oil as a remedy for a faulty engine. Despite passing the test, I still lost propulsion on 6-11-2026. I was traveling on the highway at night, crested a hill and noticed while coasting that the engine was not running and the dash said "hit the start button again." When I did this everything turned off including the lights. I was still traveling at 65 MPH without lights. Luckily I didn't panic and the lights came back on when I hit the start button again. Once the vehicle coasted to a stop; and I put it in park the motor restarted. This incident was reported on 6-14-2026, complaint number 1174-4867. When I submitted this complaint, I started that GM needs to make a change so hitting the start button when the engine has stalled doesn't turn the lights off. The vehicle was towed to the dealership, they had it for two months, put around 1000 miles on it and returned it to me with no repairs made because they couldn't reproduce the problem. They returned it to me on 7-29-2026. They did not to the engine. I radio repair was unsuccessful so it went back to the dealer that same day. 8-10-2026 Vehicle return without repairs to the radio or engine. 10-10-2026 On my second drive on the highway since having the vehicle returned to me, the engine shut off again on the highway at 65 MPH. After coasting to a stop, the engine would not restart and it was towed to the dealership. They have the vehicle and are repairing the engine. My concern is that this vehicle passed a loss of propulsion recall, still had loss of propulsion twice. I have concerns for my safety in this vehicle. I do not have confidence the current repairs will not result in another loss of propulsion.

Filed Oct 25, 2026 · Engine · MI

My 2024 L87 already had the recall done and was changed over to 0w40 oil. Driving down the road at 70 mph the engine just shut off and I had to coast to the side of the road. Checked engine codes and found p0016. Had to have the truck towed to the dealership where they replaced the engine. Clearly the 0w40 did not fix the problem.

Filed Oct 13, 2026 · Engine · 70,172 miles · WI

The contact owns a 2024 GMC Sierra 1500. The contact stated that while driving at 70 MPH, the vehicle unexpectedly started shaking and losing power until it completely stalled. The check engine warning light started flashing, and the warning messages "Service ESC" and "Service Traction Control" were displayed. The vehicle was towed to the dealer. The contact discovered that the engine had previously been replaced by the dealer at 46,370 miles under the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling) under the prior owner; however, the failure recurred. The contact associated the failure with the safety recall. The dealer was contacted regarding the issue. The failure mileage was approximately 70,172.

Filed Oct 7, 2026 · Engine · IA

Truck has been making a ticking noise for about the last four months. Yesterday, October 7, 2026 I stepped on the accelerator the engine paused a second and blew out gray smoke through my exhaust I saw in my rearview mirror. There is a delay in power from the time I put my foot on the accelerator when it actually gets moving faster.

Filed Oct 6, 2026 · Engine, Transmission · CO

Driving at approximately 45 mph on Berthod Pass in CO, towing a snowmobile flatbed trailer, when dash display indicated "low oil pressure, Turn off Engine". By the time I could read that, the engine was already off and I was all over the road trying to find a way to get off the highway. I did not have opportunity to get off highway, and ended up against a barrier, and partially remaining in traffic. GM towed the car (not the trailer, I had to do that myself) to a dealer quite some distance from my home as opposed to the dealer where I purchased the truck. Then they told me they towed it to a different dealer. After recovering my stuff, I went to the dealer where the truck was, and they said they couldn't look at it for several days. I could not wait several days simply to find out it was going to be a couple of months before id have the truck back. I traded it in on another, larger GMC simply to get out of that engine. What I learned though, is that GM used that exchange to make about $20K. This was more the dealer, but they are part of GM. My original truck was priced below book, and not the book the public can see, but the book they say they go by. They paid me $51K on an $87K truck for trade value. Then they sold the new truck at full price, no break. I was in disaster mode, as I had a large family gathering I was preparing for at our cabin, and did not have time to fight with them. The reason for the low book trade-in value was that the value of these trucks has plummeted because of the very reasons I was replacing it, GM's failure on those engines. My original truck had about 30K miles on it when it blew. The dealer told me that the one I was replacing it with (2026 Sierra HD with 6.6L Turbo Diesel) would get similar mileage, but that was untrue. I get about half the mileage I got in the first truck, and the price of diesel is about 20% more than gas. So they found a sucker on the first truck, then that same sucker bought the second one.

Filed Oct 4, 2026 · Engine · IL

I bought my 2024 GMC Sierra 1500 AT4X with 15000 miles, they did the recall, PICO test, changed oil type and put new oil cap on and at 30000 the engine had to be replaced.

Filed Sep 28, 2026 · Engine · PA

My 2024 gmc sierra 6.2 engine had th recall scope work done on the engine. I was told it passed and they changed the oil to the 0-40. Well apparently that was not the case and the bearings in the drive shaft and whatever holds it together broke.