The contact owns a 2024 GMC Sierra 1500. The contact stated that while driving approximately 70 MPH, the vehicle stalled. The contact was able to coast to the highway divider and stop the vehicle. The contact stated there was no warning light illuminated. The contact attempted to restart the vehicle, but the vehicle failed to start. The contact stated that the vehicle was towed to a dealer. The dealer diagnosed the vehicle and determined that the engine had suffered a catastrophic failure and needed to be replaced. The vehicle was repaired. The contact researched online and related the failure to the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling). The contact informed the dealer of the issue and was informed that the VIN was not included in the recall. The manufacturer was informed of the failure. The failure mileage was 6,504.
2024 GMC Sierra 1500 engine complaints
Page 5 of 9: complaints 101 to 130 of 223, newest first, as owners wrote them.
The contact owns a 2024 GMC Sierra 1500. The contact stated that while driving approximately 70 MPH, the vehicle started losing automotive power and stalled. The contact frantically maneuvered the vehicle across three lanes of highway traffic to get to the right shoulder and park the vehicle. During the failure, the check engine warning light and several other unknown warning lights illuminated. The vehicle was later towed to the local dealer. The cause of the failure was not yet determined. The manufacturer was also notified of the failure. The contact had previously received a letter regarding the federal safety agency Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 48,301.
I am writing to express my significant concerns regarding the recurring issues with my 2024 Denali 6.2, which has been subject to multiple service visits since reaching 7,000 miles. Despite these visits, the underlying problem remains undiagnosed and reoccurs shortly after I retrieve the vehicle. Following the second oil change, the engine developed a persistent ticking noise. Over the past 13 month, I have invested over $200,000 with your dealership in the past 5 years!. My truck was recently held for two weeks for service. After I lodged a complaint, the General Manager suggested I seek service elsewhere. This recommendation was made after I responded to an email stating that, following the completion of repairs to the headliner, third brake light, and brakes/rotors, I would no longer be utilizing Crain's services. The headliner sustained water damage due to improper installation by your technician, and fingerprints were also evident. I firmly believe in transparent communication regarding service progress, which was notably absent in this instance. Both the General Manager and Service Manager deferred responsibility, instructing me to contact GM directly, only for GM to inform me that direct contact was inappropriate. This resulted in a continuous cycle of unaddressed concerns with the service manager. Currently, I am operating an $80,000 vehicle that has incurred damage from a technician and exhibits a ticking engine. Furthermore, the driver's side mirror, which was previously replaced due to shaking at highway speeds, is now exhibiting the same issue, despite a technician's assertion that this is normal. I also note that my brakes, with over 89% remaining, are beginning to squeak, which your team claims is normal. This assessment is difficult to accept.
I brought my 2024 Sierra in for its L87 recall. It passed. Two weeks later I had to bring it in for check engine light. They reset the system under a TSB that is known to occur with the l87 recall. Not a total of 300 miles of passing the recall I was driving and the engine started making a horrible noise and I started experiencing loss of power. I managed to get the vehicle safely parked. The dealer pulled the oil filter and said it had 100% metal contamination in the oil. The filter looked like a glitter bomb went off. It took 3 weeks, they replaced the engine with a remanufactured engine even though I told them new only. They also had to replace the radiator as it was polluted with metal.
My truck completely stalled and had to be restarted. I took it to the dealership to have it resolved. They wouldn’t look at the truck without a recall notice. Now there is a recall notice for my exact issue. I took it to be repaired by them but now they are saying that there is nothing wrong with the vehicle and are refusing to do anything about it stalling. They specifically said that I will have to stall and potentially get in a car wreck before they will repair the damaged engine. I have been very disappointed in this entire situation and would like to avoid driving a car that may end up crashing due to a preventable problem.
12/7/2025 8:48 AM Engine lost propulsion while driving 35mph enroute to residence. The engine cut off and at the same time we saw a cloud of blue smoke trailing the vehicle. The engine refired and propulsion resumed. I immediately looked at the dash display for an indicator light resulting from the lack of propulsion. There were no unusual indicator lights or messages but the tachometer needle dropped about an inch and went back up again rapidly. The engine had resumed running. This loss of propulsion and resumption occurred two more times while my foot was off the accelerator. After the third incident the vehicle seemed to be running normally. I stated we had only about two miles to get home and I hope we make it. The next day I called DeLuz service department to notify them of the incident. I left a message but my call was not returned. I updated service staff of the new incident when I dropped the vehicle off for a previously scheduled appointment on 12/11/25.
Safety Recall N252494001 L87 Engine Loss of Propulsion I am currently writing due to my vehicle falling under the guidelines of this recall but it is not listed in the recalls. I have been in contacts with GM directly as they say because it is not listed on the federal safety agency as a saftey recall they will not cover the cost. I am writing to try to get this listed as I currently can not get an oil change at any location but a GM dealer because it is listed in the systems.
While driving my 2024 GMC Sierra Denali Ultimate on the highway, the engine suddenly failed without warning. The truck shut off completely while I was traveling at highway speed. I was fortunate to be able to safely maneuver to the shoulder, but the sudden loss of power created a serious risk of a collision with surrounding traffic. The failure appears to involve the engine or engine control system. The vehicle engine is currently available for inspection upon request. Prior to the incident, there were no warning lights, messages, or unusual symptoms. The shutdown occurred abruptly with no prior indication of a problem. This vehicle previously received the NS25249400 safety recall repair on August 12, 2025, and it reportedly passed all required checks at that time.
On Dec 4, 2025, my wife was driving at night on a Texas road going 75mph. Her truck died while driving and the truck shifted into neutral and computer said to restart. When she did, all electrical power was lost including headlights while traveling at 75mph at night. Vehicle eventually was started after she got to the side of the road. A check engine light was present. She made it to her destination with no further problems. Vehicle was taken to the dealership the next day. They said that she may have catastrophic engine failure that is common on the 6.2 liter GM motors.
While traveling on highway, engine suddenly just stopped. Unable to restart engine and had to coast to side of road with high speed vehicles almost hitting us several times. Towed to dealership and told metal found in oil filter. Told engine had to be replaced. Vehicle was inspected 3 weeks before by dealership and told everything was fine.
The contact owns a 2024 GMC Sierra 1500. The contact stated that while driving 40 MPH and attempting to make a right turn while depressing the accelerator pedal, the contact heard a popping sound coming from the front driver’s side and three of the wheels attempted to switch to 4WD; however, the driver’s side wheel failed to respond as intended. The contact was able to pull over to the right side of the road. A dealer was contacted. The vehicle was taken to the dealer to be diagnosed; however, the result was not provided. The vehicle was not repaired. The contact related the failure to the federal safety agency Campaign Number: 25V274000 (ENGINE and ENGINE COOLING); however, the VIN was not included in the recall. The manufacturer was not notified of the failure. The failure mileage was 55,000.
On 29 November 2025 at approximately 1700hrs, I was driving my Blue 2024 GMC Sierra 1500 AT4X outside of Pampa, TX. As I was driving to my hunting location, my truck turned itself off and placed itself in neutral. I was driving about 30 mph down a single farm road with another vehicle approaching me from the front. I was unable to pull to the side due to farmland. I was able to flash my lights to get the other vehicle to slow down before having an incident. During this time, I had to let the truck slow down to a stop. My vehicle was already inspected for the engine recall and I was informed I had nothing to worry about. That everything was good. The truck is at Greg Lair in Canyon, TX. It did put me and my passenger as risk. I did not receive any warning before my truck turned off. The dealer confirmed today that the engine had seized. The engine was inspected during the summer before this issue. I had not warning when this happened. Was just driving and lost power. Looked down at the display and it stated to restart engine. I noticed my truck was in neutral when it came to a stop.
The recall you are showing was completed 300 miles ago. There were no outstanding recalls on my vehicle on November 23, 2025. On this day I was driving home, at night and I heard a loud flapping sound coming from the front of my vehicle. I pulled over and checked the front and wheel wells, nothing was stuck. I got back in and started driving the flapping sound was coming as I pressed the gas, when coasting with no gas, there was no flapping sound. I managed to make it home and GM towed my truck the next day. The shop has informed me that the engine is gone. Even though I did the recall 300 miles ago, it was directly what they were looking for in the recall and did not find it. This clearly put me in danger.
After pulling my 2024 GMC Sierra 1500 SLT into a parking space at a local store, I shut off the engine. I observed the lighted ignition switch and the dash icons were illuminated even though the engine was completely off. Having had my foot on the brake at the time I decided to test the ignition switch to determine why it was lit while the engine was off. When I pressed the start button there was a loud, whining starter like sound, grinding like metal on metal. The noise was so alarming that I immediately took my hand off the ignition. The engine was still off. After waiting a significant amount of time I tried to restart the engine. Exactly the same thing occurred. On the final attempt to start the engine, 15-20 minutes later, it started and ran quietly like nothing had ever happened. On returning to the vehicle my wife asked what all the loud grinding noise was about. She had heard it while she was inside the store. I advised her it was our truck! The incident was shocking to us both and because of its bizarre nature I was afraid to drive the vehicle back home. As I already had an appointment on November 6 at DeLuz Chevy for another incident, I called them on November 3 to add this incident to the existing appointment. This incident was added to the November 6 appointment. Unfortunately the service department did not assess the previous incident and only addressed this incident.
I was operating my GMC Sierra 1500 SLT in Hilo HI. As I was slowly turning left from [XXX] onto [XXX] my vision was drawn to the rear view mirror. My wife and I observed a huge smoke like cloud above the tailgate of my truck and beyond. I immediately reduced my already slow speed. Traffic was heavy and I was unable to safely assess the problem on the spot. When I arrived at my destination a few blocks away I found no physical evidence that it had occurred. It has not happened since. Even so, we were concerned enough to make an appointment with DeLuz Chevy in Hilo for assessment. Unfortunately in the interim I experienced another problem with the truck and asked that it also be addressed during the smoke related appointment. Again unfortunately the DeLuz service department did not assess the smoke incident during the service visit. 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. The contact stated that while driving 30-35 MPH, the oil pressure warning light illuminated. The contact pulled over into a gas station. Upon further investigation, the contact noticed that the oil level was low. The contact added two quarts of oil to the engine. The contact stated that on a separate occasion, while the vehicle was at the dealer for an oil change and the contact informed the dealer of the low oil pressure. The dealer inspected the engine but found no cause for the failure. The contact stated that afterwards, the oil pressure warning light was intermittently illuminated. The contact stated that the engine was consuming an excessive amount of engine oil. The contact had to check the oil levels every two weeks. The manufacturer was not made aware of the failure. The failure mileage was approximately 11,000.
On August 3, 2025 I was on the road enroute to my residence. With no warning my 2024 GMC Sierra 1500 SLT engine quit. We heard a popping sound and the entire vehicle shuddered. I took safe control of the vehicle. As I intervened I noticed that the dash warning lights were lit. Almost immediately the warning lights went off and the engine restarted on its own. We were startled and extremely concerned about what had just happened. This was the first problem we encountered with the truck. I contacted the DeLuz Chevy garage in Hilo for a follow-up appointment.
The contact owned a 2024 GMC Sierra 1500. The contact received notification of the federal safety agency Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING). The contact stated that while driving at 16 MPH, the engine suddenly stalled. No warning lights were illuminated. The contact was able to restart the engine, placed the gear lever on neutral(N), and revved up the engine. The contact then moved the gear lever to drive(D); when the vehicle accelerated independently, the contact swerved to avoid hitting a telephone pole, then swerved to avoid hitting a mailbox, and ended up hitting a tree, where the vehicle came to a stop. The driver-side and passenger-side air bags. A police report was filed. The contact sustained minor injuries to his foot. No medical attention was provided. No passengers in the vehicle. The vehicle was towed to a collision center. The vehicle was not inspected. The insurance company was notified. The manufacturer was made aware of the failure and pending an investigation. The failure mileage was approximately 25,000.
On October 23rd at approximately 0900-0915 hours I arrived at a friends house located at [XXX] . As I normally do, I pulled up into the driveway which has a pretty significant incline. I shifted the column shifter into park, and turned off the vehicle via the push button ignition switch. The parking brake/hill brake system automatically engaged as per normal operation. I exited the vehicle and before I could shut the door, the vehicle began to roll backwards. The driver's side door hit me in the right shoulder which pushed me to my left and caused me to roll my left ankle due to the down slope of the driver way. While I felt immense pain in my right ankle, I was able to jump back into the truck and slam on the brakes, causing both rear wheels to lock up and skid in the driveway. I then turned back on the vehicle, noting that the transmission position was still in park, and the parking brake/hill brake was still engaged. I had to disengage the push button parking brake/hill-brake, shift the vehicle from park into drive to move back up the driveway. This time I ensured that the vehicle did not move after following the exact same steps. My truck under went an approximately 30 minute software "upgrade" approximately 2.5 weeks ago. I believe there was an issue where the park sensor did not fully engage, leading the vehicle to believe it was still in an operational gear, however it does not explain how it was able to not only over-ride the parking/hill-brake itself, as well as allow me to shut the vehicle off and exit the vehicle. This safety hazard has caused me an injury that has already caused me to miss 48 hours of work (I am a federal firefighter) and will require more missed time should surgery be required. There were no warning lamps, the backup camera was not engaged, the only audible sound was the beep that the vehicle makes when engaging the parking brake automatically. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The first time the truck stopped and wouldn’t want to start (engine light came up) after a few minutes and with a push the truck turned on. Next day while driving on freeway the truck shift hard pulling vehicle back as if it was going to stop without braking. Took truck to GMC dealer on 9/26/25 for an inspection with approx 17,000 miles. Oct. 17, 2025 GMC rep said my truck was inspected/ good to go and was ready for pick up. Not sure what part they had replaced. On Oct. 18, 2025 picked up truck while leaving dealer I had my family in my truck about 3 miles into my drive we heard a loud clunk and the truck shifted hard slowing the truck down and display reduce acceleration drive with care and check engine light on. Have in mind we were on a busy traffic street driving while other cars had to pass us because we couldn’t speed up. I did not feel safe with my children in the car, left it again for the 2nd time with GMC service dept. Now we are almost reaching to a 30 day grace period without our vehicle.
GM has identified my vehicle as having a problem "If the engine fails during vehicle operation, the vehicle will lose propulsion, increasing the risk of a crash.". It has been almost 6 months since this issue was identified and yet GM has failed to address the issue in my vehicle. I believe this problem should be immediately corrected and if it results in my or my families injory GMC should be considered grossly negligent for their failure to promptly correct the issue.
The contact owns a 2024 GMC Sierra 1500. The contact received notification of the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure.
The contact owns a 2024 GMC Sierra 1500. The contact received notification of the federal safety agency Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure.
I received a letter from GMC almost 4 months ago telling me that my 2024 GMC Sierra 1500 was recalled due to an engine safety issue. The letter stated that there was no remedy yet and that a subsequent letter would be sent with instructions on how to have repairs done. I never received a second letter. Also, my GMC app stated that the vin had an incomplete recall. Today the app states that there are no incomplete or completed recalls. I called my dealer and they said they know nothing about the recall and I should just wait. This is unacceptable and I need some type of resolution.
The contact owns a 2024 GMC Sierra 1500. The contact received notification of the federal safety agency Campaign Number: 25V274000 (Engine and Engine cooling). The vehicle was scheduled for the recall repair; however, the contact was informed that the recall repair could not be completed. The contact was informed that the computer system was not reading the machine. In addition, the contact stated that the appointment was rescheduled by the dealer twice. The manufacturer was made aware of the failure but provided no assistance. The vehicle had not experienced a failure.
The contact owns a 2024 GMC Sierra 1500. The contact received notification of the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact attempted to notify the dealer about the issue, but received an automated message that referred the contact to a website. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not notified of the failure. The contact then received a letter to call the NTHSA Hotline if the recall repair was not performed in a timely manner. The contact had not experienced a failure.
On 22 April I turned my truck in to the dealership service department due to recall of the L87 6.2L engine. Also, told the rep, "my truck was shifting hard". After inspection revealed the valve body needed replacing. My vehicle is still at the service department today with no remedy in sight. I asked if Gm could just replace my transmission because, the part is not coming. They explained they would replace the transmission, but they can't find a 10 speed transmission available to swap out. I call weekly to get updates. nothing!!
The contact owns a 2024 GMC Sierra 1500. The contact stated that while vacationing in Canada and driving at various speeds, the vehicle jerked, and the vehicle failed to accelerate as intended while depressing the accelerator pedal. In addition, the RPM fluctuated, and the engine revved abnormally. The contact stated that the vehicle failed to reverse(R) as intended. The contact was able to coast to the side of the road while in LIMP Mode. The vehicle was towed to a dealer, where it was diagnosed, and it was determined that the transmission had failed and needed to be replaced. The contact was informed that when the dealer contacted the manufacturer to order a new transmission, the manufacturer refused and informed the dealer to repair the current transmission. The vehicle was repaired. The contact stated that a week later, the vehicle experienced another failure. The contact stated that on a separate occasion, while approaching a stop sign, the brake pedal was depressed, and the engine revved unintendedly. The contact used force to depress the brake pedal. The failure persisted. The vehicle was taken to a dealer back in the USA; however, no cause for the failure was found. The vehicle remained at the dealer unrepaired. The manufacturer was notified of the failure and was awaiting the results of the diagnostic test. The failure mileage was approximately 9,000.
On [XXX] while traveling on a highway, the vehicle lost drive power—the gear selector would not remain in Drive and reverted to Neutral for approximately 10 minutes. This created a serious safety hazard due to sudden loss of propulsion in moving traffic. The event was captured by OnStar, which emailed an automated incident alert. I later received a GM safety recall notice concerning potential engine loss of propulsion for vehicles with the 6.2L L87 engine (the federal safety agency 25V‑274 / GM N252494000/001/002). I presented the vehicle to Ewing Buick GMC (Plano, TX) on July 23, 2025 for recall service and retrieved it on July 28, 2025. Approximately one week later, during an interstate trip to Kansas City, the engine catastrophically failed about one hour from my destination, leaving the vehicle disabled on the roadway shoulder. Roadside assistance towed the truck to Briggs Auto (KS). Briggs Auto diagnosed engine failure and ordered a replacement engine. I was informed the engine is on back-order with no estimated arrival, and the shop is under-staffed, prolonging repairs. The vehicle remains out of service. The sequence—pre-recall loss of propulsion, post-recall service, and then engine failure within a week—shows a serious safety defect that can lead to sudden loss of power at highway speeds, risking a crash. Frequency: Loss of propulsion occurred at least twice (March highway incident; subsequent engine failure in early August). Warning Lights/Messages: [Gear refuse tom shift to Drive mode.] Injuries/Crashes: None, but risk was substantial due to sudden power loss. Dealer Involvement: Ewing Buick GMC (recall visit); Briggs Auto (diagnosis/engine order). Attachments/Supporting Docs: OnStar email, recall notice, repair orders, tow documentation, photos/video. Please investigate whether 2024 GMC Sierra trucks with the 6.2L L87 engine continue to pose a loss-of-propulsion risk after recall service and whether parts shortages/back-orders are delaying effective remedy INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION
The contact owned a 2024 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the low oil warning light illuminated. After a visual inspection, the contact observed that the engine was abnormally low on oil, though the vehicle had recently been serviced. The vehicle was taken to an independent mechanic, who did not provide a specific diagnosis but observed metal shavings inside the oil filter. The vehicle was not repaired. After investigating the failure, the contact related the failure to the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling); the VIN was included but the vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 16,000.
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