2024 Chevrolet Silverado 1500 Engine

Vehicle simply died in the middle of an intersection and blocked the roadway for an extended period of time before being towed back to dealer. Engine failure confirmed, replacement has been ordered

Thrust bearing failure at 11,945 miles requiring complete engine replacement.

Vehicle: 2024 Chevrolet Silverado 1500 High Country Engine: 6.2L L87 V8 Recall: N252494001 – L87 Engine Loss of Propulsion I am submitting this complaint to report a serious safety defect involving my 2024 Chevrolet Silverado 1500 High Country related to NHTSA Safety Recall N252494001 (L87 Engine – Loss of Propulsion). My vehicle experienced a sudden engine failure consistent with the conditions described in the recall, resulting in loss of propulsion. Due to this failure, General Motors authorized a full engine replacement at an authorized GMC dealership. After the engine replacement was completed, the replacement engine also failed in the same manner as the original engine, again resulting in loss of propulsion. This second failure occurred despite the vehicle being repaired according to General Motors’ recall procedures and specifications. Loss of propulsion creates a significant safety risk, especially while driving at highway speeds or in traffic, as it can lead to sudden power loss without warning and increases the risk of a crash. Despite the replacement engine failing in the same way as the original recalled engine, General Motors is now refusing to replace the second failed engine or provide a permanent remedy. As a result, my vehicle remains unsafe to operate and unresolved under the existing safety recall. I am concerned that the recall remedy is inadequate and that replacement engines may also contain the same defect, creating an ongoing safety hazard. I am requesting that NHTSA review this matter to determine whether the recall repair is effective and whether additional corrective action is necessary to protect vehicle owners.

After taking in to dealer for recall diagnostics and higher viscosity oil change a couple months later. Heard a noise while driving on interstate, lost cruise control, stability system, engine light came on with a ECS. Kept driving on the interstate until we got to a red light and the engine died. Cranked starter but hard to start and ran rough and died multiple times. Feathered throttle to get over 1K RPMs to get it off the street. Towed to nearest Chev dealer. P300 code. Tore engine down. Here is what dealer documented: CUSTOMER STATES CHECK ENGINE LIGHT IS ON WITH SERVICE TRACTION & SERVICE ESC MESSAGES. ENGINE IS RUNNING ROUGH AND WILL STALL. TOW IN. Valve Spring Replacement - Replacing the faulty valve spring on the cylinder 7 exhaust side is necessary as it is causing the exhaust valve to remain stuckopen, leading to engine misfire and over 80% leakage in that cylinder. This service can help restore proper engine compression and improve engine performance. Op.1 CEL -CEL: Customer states 1. replaced the exhaust valve spring and valve spring seal. reinstalled components with new seals and cleared dtcs. started engine and verified the engine starts and runs but having multiple cylinder misfires. reset engine fuel trims and brought engine to operating temperature and let it run for some time. other cylinder misfires went away but still found a dead misfire on cylinder 7. removed and swapped spark plugs with no change. noted the spark plugs have some exhaust build up on the tip due to the faulty exhaust valve spring. performed a static compression test and found the compression to be 175 psi and a running compression test with a smooth build up to 125 psi. checked spark and spark was good. tested the injector system using the AFIT test and found the test to pass indicating no faults with the fuel injectors. performed a cylinder leak down test and found no cylinder leakage coming from cylinder 7. put engine back together and cleared dtcs. reset the throttle

GM replaced engine after a complete failure associated with a defective engine recall. The remanufactured or new engine installed seems to have a similar defect as the original engine. Returned vehicle for service and was told GM refused to repair or replace the engine until the vehicle suffered another complete engine failure. Regardless of any safety concerns of an another complete engine failure.

My engine shutoff while I was driving on the highway. I had the initial recall remedy performed on my 6.2L 2024 silverado truck by getting the thicker oil about 8 month's ago. Now my truck is in the shop I'm suppose to be getting a replacement engine. I'm not sure if I can trust the replacement engine im getting.

Vehicle died and would not move forward or in reverse. The engine locked up and had to be replaced. Recall to test engine and replace with thicker oil was performed 6000 miles previous to engine failure.

In May 2025, we received notice that my truck was involved in GM Safety Recall N252494000. In July 2025, a fuel consumption test was performed because the vehicle showed low oil pressure and was 2-1/2 quarts low. Chevolet indicated "consuming oil" was normal; however, I have owned trucks for 25 years and have never "consumed oil". In October 2025, we received notice that we could finally schedule the engine inspection at a Chevrolet Dealer of our choice. We scheduled this appointment for Monday, November 17th, 2025. The Picoscope Inspection was performed and the engine passed. They installed new higher viscosity oil, new oil fill cap and insert; but they note that the vehicle had no oil on the dipstick and would like to have another consumption test performed in 2000 miles. The next day, Tuesday, November 18th, 2025, the engine failed. The initial diagnosis was a continuous misfire of cylinder #3 requiring a Valve Lifter Replacement on Left Side. Upon completion of this work, they identified additional issues including spun crankshaft thrust bearing and damage crankshaft journal requiring replacement of the 6.2L engine. The engine failure occured the day after the proposed recall "fix" indicating that the picoscope test and higher viscosity oil is not an effective remedy. I brought up concerns about the consumption of oil multiple times with the Chevy Dealer multiple times and the response is "oil consumption" is considered normal with this engine. Not having my vehicle created significant hardships as I work in construction. I did not have a toneau cover to secure my tools, I did not have the ability to use my toll pass on the highway, I could load construction materials into the rental vehicle, and I had to switch between 4 different rental vehicles during the course of the 65-Day Repair!

I have a 2024 Silverado with the L87 (6.2) engine. I brought in in for recall. After inspection the Chevrolet Service Center said it was good. They changed the oils to 0-W40 per the recall. On January 8, 2026 I was driving at 35 mph and the engine just stopped. I had it towed back to the Chevrolet Service Center and after diagnosis it was determined that the engine failed and has to be replaced which take a month or more.

Engine burning massive amounts of oil, noticeable tick in engine, dealer request I bring it back every 500 miles for a total of 2000 miles to assess wether or not there’s a fault, when I requested for them to keep it diagnose it in their own way without forcing me to continuously have to return to the dealer (4 different times) for a conclusion

5449 miles. Motor had a knock. Took to dealership and they replaced valve lifters

Per the dealer, catastrophic engine failure.

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated that while driving 60 MPH, there was an abnormal sound coming from the engine compartment, and the oil pressure gauge dropped. The vehicle was steered to the side of the road, where it stalled. The vehicle was not able to restart. The vehicle was towed to the dealer, but was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 12,794.

[XXX] , a long-time Chevrolet customer and GM Family First Program participant, reports a recurring, life-threatening defect in his 2024 Chevrolet ZR2 3.0 Diesel truck. The issue centers on repeated fuel injector failures that have caused the vehicle to become uncontrollable while driving, posing serious safety risks to his family and others on the road. Despite multiple incidents and documented repairs, Chevrolet has failed to provide a permanent solution or meaningful customer support. Mr. [XXX] is requesting NHTSA’s intervention to investigate the defect and hold GM accountable. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated that while driving at 40 MPH, there was a chirping sound coming from the engine. A dealer was contacted. The contact pulled over to the right side of the road and waited for tow truck assistance. The vehicle was towed to the residence and then towed to the dealer the following day to be diagnosed. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact stated that the failure had occurred at least two or three times per week. The contact related the failure to NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING); however, the VIN was not included in the recall. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was 27,900.

See attached document for complaint.

I was driving on [XXX] leaving from Onawa, IA. Up to this point I had not issue or notifications about my vehicle. While driving North bout and having the adaptive cruise control set at 80 MPH, I was in the left lane passing 3 semis in the right lane. After passing the first one, the first semi merged to the left lane following. I was approximately 1/2 passed the next semi when all the sudden my cruise started to slow down. It went from 80 to 78 back to 80, then 80 back to 77 to 80. Suddenly and with no warning the engine completely shut down and I went from 80 - 0 is approx. 100 feet. The semi behind me sounded their horn loudly as they almost hit my rear end before merging over. I had no time to go over to the right shoulder and had to go to the left where the vehicle would not move. I could not move the vehicle off the shoulder as it would not shift to natural. Law enforcement was notified as the safety of the vehicle on the left side of the interstate caused safety issues. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Dear National Highway Traffic Safety Administration, I am writing to formally report a serious safety issue with my 2024 GMC Sierra 1500 equipped with the 6.2-liter engine. At the time of the incident, my truck had only 17,000 miles on it and had received the two necessary oil changes as recommended. On Thursday, [XXX] while driving northbound on [XXX] in Houston, Texas, my truck unexpectedly lost power while in motion. Fortunately, I was in one of the right lanes and was able to push it to the side, but not before nearly being struck by another vehicle. Several cars had to swerve to avoid my disabled truck, and I truly believe that I could have been seriously injured or worse due to this mechanical failure. After having my truck towed to the dealership, I was informed that the engine had completely locked up and needed a full replacement. However, despite my immediate action to get the issue resolved, I have now been without a vehicle since [XXX], and as of today, March 10, 2025, there is still no replacement engine available. I have been told that the 6.2-liter engines are on backorder for 5 to 6 months because this issue is happening to so many vehicles. This raises serious concerns: If so many of these engines are failing, why has there been no recall issued? How is it acceptable for GMC to sell vehicles with a known defect that can lead to life-threatening situations on the road? Why am I still paying a $1,300 monthly car note for a vehicle I have not been able to drive in over three months? This is not just a case of vehicle reliability; this is a severe safety hazard. My truck failed suddenly in moving traffic, and based on the widespread engine failures, it appears that this could happen to many other drivers as well, potentially leading to catastrophic accidents. I urge the NHTSA to investigate these engine failures immediately and take appropriate action, including issuing a recall if warranted. I would appreciate an update on INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2024 Chevrolet Silverado 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING); however, the part to do the recall repair was not yet available. 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.

Supporting Facts: • Unknown [XXX] bought a 2024 Chevy Silverado 1500 Crew ZR2 4WD VIN: [XXX] at C. Harper Chevrolet, [XXX] [XXX], Deal# [XXX], Paid $78.211.16 ➢ GM ordered a stop sales on April 2025 on all the dealer lots. They sold it to [XXX] after the stop sales was issued. ( No engine, Crankshaft Position Sensor Diagnostics recall inspection or 40 Wgt. oil change was issued. This was required before sales. (Recall N252494001) Release date: April 2025. I requested twice at two chevy dealerships for the engine to be inspected and fixed. No resolution was provided and they refused to fix it. ➢ GM issued a recall for Chevy Silverado 1500 equipped with the 6.2-liter V-8 gasoline engine. ➢ NHTSA.gov website “Part 573 Safety Recall Report”. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2024 Chevrolet Silverado 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING); however, the part to do the recall repair was not yet available. 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. Parts distribution disconnect.

The contact owns a 2024 Chevrolet Silverado 1500. The contact was notified of NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING); however, the part to do the recall repair was not yet available. The local dealer was made aware of the issue and confirmed that parts were not yet available. 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. VIN tool confirms parts not available.

While driving in traffic, car was making weird shifts and strange noises. The engine suddenly lost all power. I tried to restart and the car wouldn't turn over. I tried again and it finally turned over after struggling.

i have a 2024 Silverado 6.2L. while driving the engine made some scratching/chirping sounds. then it felt like the wheels locked up momentarily. when i got pulled over the engine was chirping and slightly knocking. then the engine stalled. I know there is an active recall for 2021 to 2024 L87 6.2L engines, but the recall did not show up on my vin. everything i read states that any L87 produced after June of 2024 was not affected but my engine is damaged just like the ones in the recall.

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, there was a loud ticking sound coming from the engine compartment. There was no warning light illuminated. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The dealer was contacted. The vehicle was not diagnosed or repaired. The dealer confirmed that parts were not yet available for the recall repair. 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 failure. The approximate failure mileage was 29,000.