2024 GMC Yukon: engine failure

Filed Oct 13, 2026 · Engine · PA

2024 GMC Yukon, L87 6.2L V8 VIN: [XXX] This complaint concerns the L87 6.2L engine and the federal safety agency Engineering Analysis EA26005 regarding engine failure following the remedy for Recall 25V‑274. My vehicle underwent the GM recall inspection, including the Pico test, and passed the inspection. The engine was therefore not replaced. Since completion of that inspection, I have continued to obtain abnormal used-oil-analysis results showing excessive and increasing engine wear metals. At the most recent oil change, I cut open the engine oil filter and found visible metallic swarf/debris embedded in the filter media. I have retained the oil filter media and have photographs documenting the metallic debris. I also have the previous oil-analysis reports documenting the wear-metal trend. The engine has now developed a loud knocking noise. Because of the knocking noise, documented abnormal wear metals, and visible metallic debris in the oil filter, I no longer consider the vehicle safe to operate due to the possibility of sudden engine failure and loss of propulsion. The significant concern is that this vehicle passed GM's Recall 25V‑274 screening procedure but appears to be developing the same type of internal engine deterioration that the recall was intended to identify and prevent. I am requesting that the federal safety agency associate this complaint with Engineering Analysis EA26005 and review this case as a possible post-remedy failure of the Recall 25V‑274 inspection procedure. Supporting evidence available includes: • Used-oil-analysis reports showing excessive and increasing wear metals • Photographs of metallic debris/swarf in the oil filter media • Retained oil filter and filter media • Dealer repair and recall records • Mileage and oil-change records • Current loud engine knocking noise The vehicle is presently not being driven because of the potential for engine seizure or sudden loss of propulsion. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 21, 2026 · Engine · MA

After having the recall inspection completed and changing to the recommended higher grade of motor oil, 0W40, my engine failed while driving on a major highway. We were traveling at high speed on a busy highway when the engine failed and the Yukon shifted into neutral leaving me little time to pull off the road. When the failure occurred the Yukon shifted itself into neutral and a message appeared telling me to press start again. I was able to get to the side of the roadway and called the State Police for assistance. Six of us stood on the Side of this major highway for 90 minutes waiting for a tow truck. Since the incident the engine has been replaced by the dealer but I am concerned that this may happen again. After the recall inspection they tell you that you are ok but clearly you are not, you are still in danger.

Filed Sep 5, 2026 · Engine · OK

Our Yukon was taken in for the recall. Dealer did the test and said it passed and used different oil. My wife and kids were driving to [XXX] from [XXX] yesterday. As they exited the highway, the car began acting weird. Then the car completely died. It was towed due to error code P0016. Dealer said they are going to put a new engine in. I saw online that cars with replacement engines were failing too? INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 30, 2026 · Electrical, Engine · FL

Issues with the google voice, transmission issues, engine failure to start or restart. Reported same year vehicle was bought. Repeatedly. Dealership even with video evidence stated could not repeat issue and nothing wrong. My car then starts rattling in the engine and they do a full replacement had it for over three months. Now it’s leaking fluid and smoking. They try to send the consumer away and delay delay until the warranty is over. Unethical practices. They knew there was an issue with my engine as it was on the recall list but kept denying any issues until complete failure. Now less than 20 days after that repair the car is leaking and smoking.

Filed Aug 29, 2026 · Engine · SC

My 2024 GMC Yukon Denali equipped with the 6.2L L87 V8 experienced an engine failure on July 4, 2026. Prior to the failure, there was no visible damage, warning, or other evidence that the engine was about to fail. I drove the vehicle to purchase fireworks and shut the vehicle off normally when I arrived. When I returned to the vehicle after shopping, the engine problem became apparent. There had been no noticeable indication of an engine failure before I turned the vehicle off. The vehicle was subsequently taken to a GM dealership, where the engine failure was confirmed and ultimately required replacement of the 6.2L L87 engine. The vehicle remained out of service from July 4, 2026, until it was returned to me on August 21, 2026. The original failed engine was in the possession of the servicing GM dealership I purchased the car from. Not even 8 months later of purchase the vehicle needed a 3rd engine (original, recalled engine, warranty engine). The lack of warning before the failure is a significant safety concern to me. The vehicle had been operating immediately before I parked it, and there were no apparent symptoms that would have alerted me that a major engine failure was imminent. Had the failure occurred while the vehicle was traveling at highway speed or in traffic, the sudden loss of engine operation could have created a dangerous situation. The failure was confirmed by the GM dealership and resulted in replacement of the L87 6.2L V8 engine. I am submitting this complaint to document the failure and because of continuing concerns regarding the L87 6.2L V8 and the effectiveness and long-term reliability of the recall remedy. I am still currently waiting for the repair work documentation for the new (assuming it was new) motor. I have attached attempts to talk to GM, app incidents, repair work being completed.

Filed Aug 28, 2026 · Engine · MO

Complete engine failure, recall was performed before engine failed on highway with family inside.

Filed Aug 25, 2026 · Engine · LA

Engine locked up and seized traveling 75mph on interstate with only 28,000 miles

Filed Aug 23, 2026 · Engine · TX

The engine began knocking on startup and on acceleration. The vehicle would sometimes have difficulty accelerating. Upon taking it to the dealership, they were able to duplicate the issue. Upon inspection by the dealership, 2 rod bearings had spun and caused crankshaft damage. The manufacturer approved a full engine replacement under the warranty. There were no warnings lights, messages, or any other symptoms of the problem prior to the first incident.

Filed Aug 20, 2026 · Engine · MO

I have a 2024 GMC Yukon Denali equipped with the 6.2L L87 V8 engine. The vehicle has approximately 23,000 miles. The vehicle previously underwent the remedy associated with the L87 engine recall. The engine now uses SAE 0W-40 dexos R oil and has the corresponding 0W-40 oil fill cap. After the recall remedy was performed, the check-engine warning light began intermittently FLASHING while I am driving. The light may flash for a period of time and then turn off again. I have also intermittently experienced the engine running rough or the vehicle shaking while idling. I have noticed the flashing warning light occurring while the engine is under load, including while driving uphill. I have video documenting the check-engine light flashing while the vehicle is being driven. Because the condition is intermittent, the warning light is not necessarily illuminated afterward. I am concerned because this vehicle is equipped with the L87 engine that was subject to GM recall N252494000/the federal safety agency Recall 25V‑274 for potential engine damage/failure, and my vehicle appears to have already received the recall remedy. I understand the federal safety agency is currently investigating reports of L87 engine failures occurring after completion of that recall remedy. The cause of my vehicle's current symptoms is UNKNOWN and has not yet been diagnosed. The vehicle is available for inspection. I am filing this complaint because an intermittently flashing check-engine warning, rough/shaking operation, and the possibility of an engine malfunction or loss of propulsion present a safety concern, particularly if an engine failure occurs while the vehicle is being driven. I do have an appointment with a different GMC dealership for next week instead of the GMC dealership that sold it to me and preformed the original fix.

Filed Jun 27, 2026 · Engine · NY

This truck has the 6.2 GM engine. While driving it late at night at approximately 28mph the engine blew, leaving the truck in the lane and unable to move. This was very dangerous since there was no warning and it just died. The truck receives regular maintenance by GMC and was tested to see if it was a “bad engine” and we were instructed that it wasn’t. GM said it will take 4-8 weeks to get an engine and the value of the truck to trade in is very low due to “marketing issues” which in my opinion is their issue not mine. I am battling stage 4 cancer and just had an operation and need a car to go to the doctors. They have officially said that they don’t have a truck to loan me. This has been going on for years apparently and the government is not doing anything to rectify it for the US tax payers per my research. I need a truck and GM said that they would get back to me within 24-48 hours, we are way past that. What is the government going to do, these trucks are not safe. What if I was traveling late at night to snowmobiling and it blew, it would be a different story. Need some help

Filed Jun 20, 2026 · Engine · GA

At 35k miles our 2024 Yukon Denali with a 6.2L engine blew on a roadway with no known warning. Extremely dangerous situation with my pregnant wife and child in the car.

Filed May 31, 2026 · Engine · WV

On our way home from vacation our engine failed and stranded us. This is the second engine that has failed and the vehicle only has 30220