2024 GMC Sierra 1500

364 complaints on file, page 1 of 19.

1. Filed Sep 30, 2026Failure Jul 20, 2026Bemidji, MNElectrical system, Power train

   At approximately 2 years, 47,000 miles I received a message that I needed to service the transmission soon. I then got a message "Trailer Brakes Disabled Service Required" and another "Service Transmission Now Unable to Shift Soon". I brought the vehicle into my closest GM dealer and they said it is a faulty shift control lever. These are known to have a fault from the factory, but since I am outside of the 36,000 bumper to bumper, they will not cover the cost. It took about 2 months for the part to come in as it was on back order, and now they want $1000 to replace it.

   NHTSA complaint 11768050
2. Filed Sep 29, 2026Failure Apr 1, 202674,200 milesAlexandria, INPower train

   The contact owns a 2024 GMC Sierra 1500. The contact stated that while driving 55 MPH, the message "Reduced Acceleration" was displayed and the vehicle decelerated quickly, and the contact was forced to pull over to the side of the road. The vehicle was taken to the dealer on several occasions to be diagnosed. During the first visit, the dealer stated that a transmission error code was retrieved and was cleared before the vehicle was returned. During the second visit, the dealer stated that the engine was consuming an excessive amount of engine oil and recommended that the engine be replaced. The contact stated that the message "Reduce Acceleration - Drive with Care" was displayed, and the vehicle went into LIMP Mode. Occasionally, after shifting to drive(D), the engine revved but the vehicle failed to respond, and the vehicle was taken back to the dealer. The manufacturer was notified of the failure. The failure mileage was 74,200.

   NHTSA complaint 11767880
3. Filed Sep 28, 2026Failure Sep 7, 2026Valencia, PAEngine

   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.

   NHTSA complaint 11767586
4. Filed Sep 27, 2026Failure Aug 31, 2026auburndale, FLPower train, Unknown or other

   I purchased a 2024 GMC Sierra 1500 Denali VIN # [XXX] on XXX with approximately 18,599 miles on the vehicle. The incidents are identified below in order. 1) XXX, Vehicle engine failure while driving at high speeds, with my daughter as a witness. I Reported the incident to Elder Ford on XXX, and my sales associate told me to take it to GMC for factory warranty. XXX took the vehicle to Central Buick GMC they performed a test that found no codes and replaced the fuel Pump Module from past experiences. They let me take the vehicle home. 2) XXX Vehicle engine failure while driving at high speeds, had to get it towed to the dealer for repair. Again, they found no codes. Had it for 5 days. Made me take it home. 3) Picked it up on XXX , was driving home and the same thing happened while going 70+ mph on the interstate. Stalled again. Drove it back to the dealer and dropped it off again, same day on the XXX. 4) Again, they found no codes and made me pick it up on XXX I was driving home on XXX and the same thing happened- lost complete power while going down the road at 40+ MPH. I had to get it towed the same day back to the dealer where it currently is at. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

   NHTSA complaint 11767218
5. Filed Sep 22, 2026Failure Aug 29, 2026Quincy, ILEngine

   2024 Vehicle is part of the massive GMC 6.2L engine recall. The vehicle was called into the dealership on 1/6/2026 (10,437 Miles / 320.9 Engine Hours) for recall evaluation. Testing indicated vehicle was NOT a candidate for a new motor so oil and oil filter were changed to 0W-40 and I was sent on my way. Vehicle started a tapping noise at idle. Dealer advised the next week was the soonest I could be seen so I set up an appointment for Monday 8/31/2026 . I used the vehicle on Saturday [XXX] and while returning home it began making a racket emitting all types of terrible noises. I was only a few miles from the dealer so I limped into the dealship and left the vehicle on their lot. I spoke to the dealership on Monday 8/31/26 and was advised the vehicle would be evaluated later that day. I spoke to the dealership on Tuesday 9/1/26 and was advised the 6.2L engine had failed (13,591 miles) and parts had been ordered. Dealer advised it would probably be 6 - 8 weeks to get the truck returned. I am a trailer boater and also pull a trailer with a side by side. These activities are why I own a truck. Dealer advised I could get a loaner vehicle but that it was illegal to tow a trailer in Illinois with dealer plates. I ended up trading the vehicle for a new truck and suffered a large unplanned expense ( $20,537) as a result. Since the vehicle had failed and was not driveable it was impossible for me to go elsewhere to trade in this vehicle to a competitor. As a result of the failure I feel I was held hostage to buy another GMC. The vehicle did not show any abnormal gage readings or dispaly any warnings. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

   NHTSA complaint 11766155
6. Filed Sep 22, 2026Failure Sep 22, 2026Catonsville, MDExterior lighting

   Instrument panel is blank. Available for inspection. No speed, fuel or warning lights or directional lights are displayed. No vehicle inspection has been performed by service center.

   NHTSA complaint 11766150
7. Filed Sep 19, 2026Failure Sep 19, 2026Auburndale, FLEngine, Fuel/propulsion system, Unknown or other

   The truck has shut off driving 5 times total and 3 different days, I was going down the interstate, and Hwy. Speeds were ranging from 45 to 70, this is the 3rd time in the shop. At two different dealers.

   NHTSA complaint 11765521
8. Filed Sep 18, 2026Failure Apr 27, 2026Jacksonville, FLEngine

   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)

   NHTSA complaint 11765423
9. Filed Sep 18, 2026Failure Sep 18, 2026Edinburg, TXBody

   I own a 2024 GMC Sierra 1500 Elevation. The front upper grille molding/trim has become loose and is separating from the vehicle. The attachment points/clips are no longer securely holding the molding in place. I am concerned that the molding could completely detach while driving, particularly at highway speeds, creating a road hazard for other motorists. The vehicle has not been involved in a collision or other event that would explain the failure. I have photographs documenting the loose molding and believe this is a potential safety defect that should be investigated.

   NHTSA complaint 11765310
10. Filed Sep 17, 2026Failure Sep 5, 2026Barnesville, GAEngine

    On 9-5-26 while on interstate 75 going about 75 miles per hour truck started losing propulsion and speed started dropping. No warning light or anything. Navigated over to shoulder turn truck off for about 5-10 minutes and started back. On 9-8-26 on the way from Dr. appt. starting truck up it acted like it didn't want to start but did. Eventually stopped at red light and truck died and wouldn't start. Dash board lighting up and when trying to start the engine would not turn over. No warning light or anything. Truck towed but had to drag on the wrecker due to wheels locked up. On 9-16 GMC advised engine fail and will need replacing at 12,000 miles. VERY UNACCEPTABLE FOR 2024. Truck was bought new in October 2023 with 4 miles. Found out it is a known issue with the 6.2 V8. Be careful. We could have been killed in the flow of traffic and truck losing power with no warning. Couldn't even turn hazard lights on or anything. 18 wheelers coming all around and we trying to navigate to safe spot on the shoulder when we was on the interstate. GMC need to get their stuff together, you are putting people lives is danger. GMC is feeling our anger right now. Who wants a new engine in a $90,000 top of the line truck

    NHTSA complaint 11765013
11. Filed Sep 15, 2026Failure Sep 6, 2026Saint Clair, MIEngine

    I was driving my truck and I had a sudden loss of power. The engine sounded like a rattle of bolts. It was towed to the dealership and they replaced the engine.

    NHTSA complaint 11764499
12. Filed Sep 14, 2026Failure Sep 14, 2026Louisville Ga 30434, GAEngine

    I did not have anyone tell me about recalls concerning my GMC SLT, when can I have what ever it takes to send me info concerning lifters, these have not had any issues yet. Will I have someone to contact me about possible lifter issue. Current miles are 18129. Thanks for your attention. MCG

    NHTSA complaint 11764116
13. Filed Sep 12, 2026Failure Sep 12, 2026Youngstown, FLUnknown or other

    As I was driving down the road, I heard a loud explosion. I looked around, didn't see anything that could've hit the truck. I thought it was possibly a gunshot that went off. After driving for another 3 or 4 minutes, I heard glass going everywhere. It was the moonroof that exploded. Thankfully, the sunroof cover was in the closed position. Otherwise, glass would've been all over the interior of the vehicle. I called the dealership to report the incident and to see if this was something that could be covered under warranty. I'm still waiting for a call back. I then called my insurance company to report what happened. I was told to seek a repair shop and collect all receipts for the claim. No warning lights have appeared in the vehicle yet. Since we were driving home from a vacation, we stopped and got a roll of vinyl sticker to cover the outside from rain.

    NHTSA complaint 11763807
14. Filed Sep 10, 2026Failure Mar 22, 2026Chuluota, FL, FLEngine

    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

    NHTSA complaint 11763458
15. Filed Sep 9, 2026Failure Sep 3, 2026Clarkston, WAEngine, Fuel/propulsion system, Power train

    Lifters and camshaft failure, loud clanking, & sudden power loss on the 6.2 motor are the first noticeable signs. Instantly when everything happened check engine light, cruise control, & stabilizer lights flashed. The sudden loss of power forced the vehicle to suddenly slow down forcing my camper into the truck. I was hauling a within weight standerd camper but had difficulty bringing both the truck with the camper to a safe stop. There were no early signs or signal prior to sudden cautostrophic engine failure & all service records have been completed by a GM certified service dealer.

    NHTSA complaint 11763115
16. Filed Sep 9, 2026Failure Nov 16, 2025Ewing, NJElectrical system, Engine

    While driving on a divided two lane state highway at approximately 60mph my vehicle suffered a catastrophic engine failure causing immediate loss of power in traffic at highway speeds. I had to negotiate highway traffic to steer the vehicle onto a narrow shoulder and continue under reduced power to a location where the vehicle could remain stopped safely. There were no warning signs and no warning lights prior to the issue. The vehicle was towed to Faulkner GMC where it was eventually inspected and determined to be an engine failure consistent with the open recall affecting GM 6.2 L87 V8 engines. A replacement engine was installed under warranty. Additionally, a defective tailgate switch was discovered and replaced. A prior unrelated incident had occurred where the tailgate switch activated on its own lowering my tailgate while the vehicle was in motion. The tailgate lowered onto the tongue jack of a trailer I was towing causing damage to the tailgate. This issue occurred multiple times throughout my ownership of the vehicle until the switch was replaced. GM acknowledged the switch was found to be defective but refused to take responsibility for the damage.

    NHTSA complaint 11763082
17. Filed Sep 7, 2026Failure Aug 23, 2026Denver, NCElectrical system, Engine, Steering

    My vehicle has experienced repeated and unresolved electrical system failures and unexpected loss of power steering assist. The problem involves multiple warning lights, module communication faults, drivability issues, and simultaneous malfunctions affecting systems including power steering, traction control, transmission, four-wheel drive, and other electronic controls. Repair records, diagnostic information, and videos documenting the failures are available for inspection upon request. The most serious incident occurred on August 23, 2026, when the power steering failed unexpectedly while I was driving. The sudden loss of steering assist made the vehicle difficult to control and nearly resulted in a collision with an oncoming vehicle. The failure created a significant safety risk because it impaired my ability to safely steer and control the vehicle. The condition has occurred multiple times over several months and has resulted in repeated dealership visits. Repairs have included replacement an HVAC controller, but the failures have continued. The vehicle has been inspected multiple times by an authorized dealer, and the manufacturer has been notified through an open support case. As of the most recent repair visit, no confirmed root cause or permanent repair had been identified, and the dealership was still working with engineering support to diagnose the issue. Prior to and during these failures, numerous warning lamps and service messages appeared, including warnings related to power steering, traction control, transmission, four-wheel drive, trailer brake system, steering column lock, and tire monitoring systems. In some incidents, the vehicle entered reduced-performance mode. These warning messages first appeared in November 2025 and have continued intermittently despite multiple repair attempts. The recurring and unresolved loss of power steering assist while driving creates an ongoing risk of crash or injury.

    NHTSA complaint 11762555
18. Filed Sep 3, 2026Failure Aug 29, 2026Winter Garden, FLEngine

    I purchased a 2024 GMC Sierra 1500 Denali Ultimate equipped with the 6.2L V8 engine on XXX. The vehicle currently has approximately 25,000 miles. On XXX, the vehicle underwent the GM recall repair related to the 6.2L engine at Don Mealey Chevrolet. On XXX, approximately nine months after the recall repair, my family and I were traveling on the [XXX] with my two children inside the vehicle when the engine suddenly experienced a major failure. The vehicle became inoperable while we were traveling on the highway and had to be stopped and subsequently transported to Schumacher Buick GMC in [XXX]. The failure occurred unexpectedly while the vehicle was being operated normally. Having an engine failure while traveling on a major highway with my two children in the vehicle created a significant safety concern because of the potential for loss of power and the danger associated with becoming disabled in active highway traffic. GM has subsequently authorized replacement of the engine under warranty. The vehicle remains at the dealership awaiting completion of the engine replacement. I am reporting this failure because the vehicle had previously received the GM recall remedy for the 6.2L engine issue and subsequently experienced a major engine failure at only approximately 25,000 miles. The failure occurred approximately nine months after the recall repair. I am concerned that the previous recall remedy may not have adequately addressed the underlying condition associated with these 6.2L L87 engines. I am requesting that NHTSA document this failure as part of its investigation into 6.2L L87 engine failures and evaluate whether the existing recall remedy adequately addresses the safety-related engine failure condition. Vehicle information: * [XXX] GMC [XXX] 1500 Denali Ultimate * 6.2L V8 engine INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

    NHTSA complaint 11762005
19. Filed Sep 3, 2026Failure Jun 21, 2026Omaha, NEEngine

    The vehicle was part of the GM L87 engine recall. The vehicle was taken to the dealership in late 2025 for recall service. The dealership inspected the vehicle for vibration and determined that it required an oil change and updated service manual to require 0W-40 oil. On June 21, 2026 the vehicle experienced an engine failure.

    NHTSA complaint 11761880
20. Filed Sep 2, 2026Failure Aug 4, 2026Hermosa Beach, CAEngine

    After the initial recall inspection was performed, I was informed that my vehicle was not affected. Subsequently, the vehicle experienced a catastrophic engine failure while traveling westbound on [XXX] near [XXX], approximately one mile from [XXX]. While traveling at highway speed, the vehicle suddenly began losing speed and power. I was positioned between two semi-trucks, creating an extremely dangerous situation. At first, I looked to see if I was traveling uphill because of the unexpected loss of speed. I then pressed the accelerator in an attempt to maintain highway speed. The vehicle abruptly downshifted and the engine RPM increased dramatically. Immediately afterward, warnings appeared on the instrument cluster, including “Engine Oil Temperature High” and instructions to pull over and allow the vehicle to cool down. The vehicle continued to lose power, creating a serious risk of collision due to the surrounding highway traffic. The vehicle was subsequently towed to Findlay GMC, where it was inspected and diagnosed with a failed engine. The engine was ultimately replaced. This failure occurred after the vehicle had been inspected under the recall and I had been advised that it was not affected. I am concerned that my vehicle may have been incorrectly excluded from the recall or that the recall does not adequately identify all affected vehicles. The sudden loss of propulsion at highway speed presented a significant safety risk and warrants further investigation. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

    NHTSA complaint 11761573