general problems of the 2024 GMC Sierra 1500 - part 2

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).

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.

Engine started making clicking noises at highway speed. The vehicle lost power and was difficult to start. The 2024 GMC sierra was driven three blocks the a gm dealership and it was determined that the engine had failed. It took two months to complete the repair by replacing the engine with a rebuilt one.

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.

I was driving down the highway when all of a sudden felt a hesitation and then seen message low oil pressure turn off vehicle and was just able to pull of the exit ramp of the highway when the truck had complete loss of power and then died. . Called dealer right away and was flat bedded to the dealer. . This just happened yesterday (06/08/26).

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.

The vehicle received the official n252494001 recall oil remedy on 06/27/2025 at 15,438 miles (but suffered catastrophic engine failure and loss of propulsion at 33,661 miles on 05/30/2026).

On xxx, while traveling at 75 mph on a major interstate highway, this 2024 GMC sierra crew cab suffered a sudden and catastrophic internal engine seizure, resulting in an immediate and total loss of propulsion. This defect put the safety of all occupants and surrounding motorists at extreme risk, forcing the driver to navigate a completely unpowered, rapidly decelerating vehicle through high-speed traffic to reach the shoulder without the aid of engine power. There were absolutely no warning lamps, error messages, or mechanical symptoms prior to the failure; the engine locked up instantaneously without any advance warning. Following the incident, the vehicle was flatbed-towed to an authorized franchise dealership (dossett GMC in [xxx]), where it remains un-repaired and is currently available for inspection by the manufacturer or federal investigators upon request. Critically, this vehicle was previously presented to a certified general motors dealership at 34,766 miles for inspection and service compliance under federal safety recall n252494001 (which covers engine component failure and subsequent loss of propulsion). The vehicle was cleared as passing the manufacturer's inspection protocol at that time. The total engine failure and seizure occurred less than 9,000 miles later at approximately 43,634 miles. The catastrophic field failure of this vehicle demonstrates that the manufacturer's current safety recall inspection and remedy are insufficient to identify or mitigate the defect, presenting an ongoing and severe risk to public highway safety. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

My truck engine has failed due to metal shavings in the oil related to the l87 engine recall, and the failure occurred after gm had replaced the truck’s oil as part of the recall remedy. The recall remedy did not prevent the failure of the engine.

My truck has completely shut down/ loss power on several occasions. Happened when I was l slowing down or completely stopped. Everything goes dark. Had to wait several minutes before truck would start.

Engine failure at 12,000 miles.

Engine failure after passing pico test. Engine completely locked up on a busy highway without the ability to even put it in neutral. Yes, confirmed by dealer that there were metal shavings in the fluid. Inspected by authorized dealer. No lights came on in the vehicle prior to the engine failure.

Traveling northbound in the left lane on [xxx] approximately 1 mile prior to the [xxx] exit. I increased my speed to move to the right lane and exit. After moving the the right lane and signaling to exit the highway a notification appeared on the gauge cluster stating to shift to neutral and restart the engine. After coming to a complete stop at the stop light I attempted to restart and nothing happened. I contacted onstar for roadside assistance to get my truck and trailer towed and was informed they do not cover towing of the trailer. I accepted the tow of the truck and contacted the towing company who charged me $300 to tow my trailer 15 miles home. This happened late morning on Saturday and by Monday evening I was informed my engine seized and gm will be covering a replacement under warranty. My truck is less than two years old with 23k miles. The 6. 2l engine was inspected a couple months earlier for the engine recall and was deemed ok. Clearly the inspection process is not very robust. I was told I could be without my truck for 1wk, 2wks, a month, but they are not sure since I’m 4th in line for a new engine and the truck first in line has already been there a month. I was also told gm is showing inventory in michigan but the engines are not shipping. I’m currently waiting on a loaner vehicle but was told I cannot tow with the loaner vehicle which throws a wrench in my plans. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Driving normally ? brief stumble/sputter/deceleration ? engine died/no power ? check-engine light ? vehicle coasts with no throttle response ? would not restart, then restarted briefly with rough idle and immediately died. Reproduced. Towed. Dealer has not yet seen the vehicle. Inspection. No. Notification. Check engine light illuminated, truck automatically went into neutral. Safety. We were driving in traffic when problems occurred.

October 24, 2025 I had taken in my vehicle for recall 25v274 loss of motor power. Mine was deemed unaffected and given the oil change they were doing as part of that. Today it died while I was pulling a trailer with a rzr on it. I had drove about 90 miles with a stop midway when I did have the engine turned off. Then it just quit. My vehicle only has 13k miles on it. Not sure if police report was filed but they were called and there directing traffic because it stopped in a busy intersection. I had to be towed, and pay a separate fee to have the trailer towed. At 1000 miles on the truck it had to be taken in for an infotainment screen replacement.

I am reporting a catastrophic engine failure on my gm vehicle equipped with the 6. 2l l87 v8 engine. This failure occurred after the official recall remedy (recall 25v-274/ gm recall n242494000) was performed on my vehicle, which directly aligns with NHTSA's active investigation under engineering analysis ea26005. The recall service was completed by an authorized gm dealership on xxx at 22,489 miles, the vehicle had the l87 engine loss of propulsion recall completed and the pico l87 diagnostic testing was completed and passed with recommended updated oil change to mobil 1 supercar 0w-40 (19432866) quantity 8 with 12737081 filter and cap changeout. On xxx, at 26,752 miles, the engine suffered a catastrophic total mechanical failure. While driving, the vehicle experienced a sudden loss of motive power and a complete shutdown with no prior warning of any kind while driving down [xxx] at approximately 45 to 50 mph. This created an immediate safety hazard on a public roadway. The vehicle was towed to key GMC in [xxx] where technicians confirmed engine seized up. Spun connecting rod bearings at cylinder 7&8. The vehicle was at the dealership awaiting parts for repair for 65 days due to engine backorder (engine, radiator, starter, cooling lines and miscellaneous parts ultimately replaced). Because this failure occurred after gm's official remedy was implemented, the recall clearly failed to correct the underlying safety defect. I request that nhtsb include this incident in its ongoing evaluation gm's 6. 2l engine issues under ea26005. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Gm 6. 2l l87 was recalled. I took the truck in at 32,000 miles. Gm dealer perfromed a pico test, motor failed. Motor replaced with "new" crate motor. I was without a truck or loaner for 3 weeks. Dealer called me when new motor was almost complete. First they said it would be a couple more days because they started the "new" motor and it had no oil pressure. They contacted gm tec and they tested it again, it tested with too-high of oil pressure. Gm then instructed them to replace the oil pump on the "new" motor. I got the truck back a week later after being in the shop 3 weeks. I drove a total of 1,200 miles, 400 miles we're highway in one long trip. The balance was local. I went to start the truck one morning after it sat all weekend and the "new" motor was knocking like an old diesel. I video'ed it and sent to my service advisior, I was advised to bring it back again. Vehicle has been at dealer now 9 days, dealer took oil sample from "new" motor, it was found to have metallic matter in the oil. They contacted gm tec again, it took gm tec 3 days to respond, last Friday gm tec said pull the oil pan and take pictures. As of the typing of this email I have no loaner because there's a wait list for loaners, gm will only reimburse me $25/day for a rental and a truck rental is $105/day which I refuse to pay for gm's defects out of my pocket.

The engine (6. 2l v8) in my 2024 GMC Sierra 1500 at4 failed at approximately 40,750 miles. I began hearing a ticking noise coming from the engine, and the dealership subsequently diagnosed the cause as damaged bearings that in turn damaged the crankshaft, requiring a full engine replacement. Notably, this vehicle was not included in the related recall covering this engine defect, despite exhibiting the same failure. The original failed engine may be available for inspection upon request but I would need to confirm with the dealership whether it was retained or already returned to gm under warranty. This defect creates a serious safety risk because a damaged crankshaft and bearings can cause the engine to lose power or shut off without warning while driving. An unexpected loss of engine power at highway speed or in traffic could result in loss of vehicle control, reduced ability to accelerate out of a hazard, and increased risk of a collision to myself and to other drivers on the road. The failure gave no advance warning, so there was no opportunity to pull over safely before the issue became apparent. The fact that this failure occurred outside the scope of the existing recall suggests other vehicles with the same defect may be similarly at risk without notice. The dealership diagnosed damaged bearings and a damaged crankshaft as the cause of the ticking noise and performed a full engine replacement under warranty, confirming the failure. The dealership diagnosed the failure and performed the repair; I do not have direct confirmation of whether gm's engineering or warranty division conducted a separate inspection of the failed components beyond the dealer-level diagnosis. No warning lights or messages appeared on the dashboard at any point. The only symptom prior to failure was a ticking sound from the engine which I noticed shortly before the engine required replacement. I was not provided any electronic warning that would have alerted me.

Engine seized while driving. Vehicle was inoperable.

I was driving and lost engine power in the left lane of a freeway, cut across traffic and coasted to the shoulder. Had truck 6' off of road, though with semis and cars passing at 70mph, I left and waited in the ditch for the tow truck. The electronics worked, but the engine was dead and would not start. When the tow truck arrived, the wheels were locked up and they used rollers to haul the truck to the dealership. After the dealer inspected the truck, they sent a message saying they could not turn the engine over by hand. The engine had metal shavings in the oil filter and after removing a valve cover, found metal contamination circulated throughout the engine. The engine, radiator, oil cooler lone, and battery junction box all require replacement. This truck has a 6. 2l l87 engine, and the dealer has had several other vehicles with the same blown engine failure. The truck was in for the recall on this issue about a month before the engine went out, they placed a pico scope in the engine to check the drive shaft, and then added a heavier oil. No warning lights came on until the engine died.

While driving on the highway, I went to pass someone and there was a big shutter in the engine and then a load ticking noise from the engine after. All of the lights came on and the vehicle was running rough.

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).

Engine failure on March 8, 2026. 2024 sierra denali 1500 VIN [xxx] prior to this incident, the vehicle was taken to the same dealer due to the safety recall. The engine was inspected on November 12, 2025, and I was told that it "passed," with the remedy being a change in oil viscosity. I was driving on March 8, 2026, when I heard some odd noises (clanking and knocking). Shortly thereafter, the engine just stopped in the middle of the road. It would not restart, and as a result, I couldn't put it in neutral to roll it out of the roadway. It remained stuck in park. I was stuck for 2+ hours in the rain, waiting for a flatbed wrecker. Cars were unable to pass in either direction. When the tow truck arrived, I was told it had to be dragged on to the flatbed with sleds due to the transmission being stuck in park. The truck was taken to carl black GMC in roswell, GA. On Monday they confirmed that the engine had seized and needed to be replaced. The repair was completed, and I picked up the vehicle on Friday, March 13. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Engine seized at 23,291 miles, approximately 3,661 miles after gm's authorized dealer performed a picoscope inspection under recall n252494000 and certified the engine as passing. July 2025 recall attempt was documented as incomplete with no remedy available. November 2025 inspection passed the engine. Engine seized March 2026. New engine installed under special coverage n252494003. New drivability concern — hesitation and lurch at low speeds — appeared immediately after the repair.

My GMC sierra with 40000 miles the check engine light turn on and was steady on when driving on the highway I loose a power on the vehicle for a few seconds and almost a semi truck behind me hit me because I don’t have any power on the vehicle, I stop on a safe place and try to start the vehicle again immediately call dealer for appointment an start drive to home. The lady on general motors say I can drive safe with my vehicle but I don’t feel safe because nothing on the onstar computer works the emergency button and gps it’s not working at all.

Engine failure. I was driving down the highway pulling a trailer and the rpms raced up and I instantly lost power. Had to try and get over to the right lane/shoulder after losing all power. Extremely scary situation going 75mph on a 3 lane highway in the left lane. Luckily I made it to a safe spot but once there, I could start the truck. It. Would sit a power cycle. Tow truck couldn’t get it into neutral so had to drag it up the flat bed. After being towed to dealer they confirmed the engine was shot and ordered a new one on March 9th. We are now over 30 days without my truck. This has not been inspected by anyone besides the dealership it was towed to and the dealership I bought the truck from and use for service. My truck was in the shop many times prior to this. Had to have the cam shaft replaced before the recall fix was published to dealerships. Once fixed my wife picked it up with my child and once they left the dealership it started vigorously shaking again and she brought it back to be told it was a fault plug and plug wire. Once our VIN came up for recall it passed the test and they put new oil in and sent me on my way. A couple weeks later it was acting strange again and I brought it back for them to again say it was a faulty plug/wire. About two weeks after this is when the engine locked up. Truck has 38,000 miles and doesn’t feel safe for our family. What can we do?!.

On 4/30/25- I took my truck to the dealership due to receiving a recall notice (engine propulsion) in the gm app. No codes camp up and got the all clear. Dealer did not change oil to 0/40 nor air filter. Advised gm had not provided the recommended oil yet on 10/06/25- the engine propulsion fix was completed. Oil changed to 0/ w40. Engine module reprogramming completednext. On 3/07/26- dropped off my sierra truck at dealership. Ticking sound. Confirmed engine replacement was needed even after the oil viscosity change. 4/22/26- replaced engine assembly, radiator, gaskets, hose, belt kit. At the time of the engine replacement, the truck had only 16,756 miles. As of 8/25/26, having an oil compression test completed as the replacement engine has been excessively burning oil. Needed the dealership to complete an official text for gm, but from checking the oil, the vehicle has short @ 1quart of oil every 1,000 miles.

2024 1500 denali 3. 0 duramax diesel engine failed at 57,000 miles. Engine is out of spec per dealer inspection, has an audible ticking noise, an additional audible metal on metal noise, and loss of power. New 3. 0 engine is on back order due to a large volume of engine failures and has no eta on when it will arrive.

My 2024 GMC Sierra 1500's engine has gone bad, and needs to be replace after only 71,000 miles, and this is only 90 day after already replacing the transmission.

Had recently turned 40,000 miles and was driving down a highway; ,lost all power had to get towed to dealership. Was told engine went out, and had to get another. Would be weeks, still no engine. Was towed 3/2/2026. Common problem finding out, was a 90k vehicle unacceptable!.

The contact owns a 2024 GMC Sierra 1500. The contact stated while driving 35 mph, the vehicle shut off while making a turn and started shaking abnormally. Several unknown warning lights were illuminated and the contact pulled over to the side of the road and turned off. The vehicle failed to restart. The vehicle was towed to the dealer and was diagnosed, and it was determined that the engine had seized and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 25,524.

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 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.

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.

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.