Gmc Yukon Xl 2021: Retiros, Quejas y Ley de Limón de California

I previously opened NHTSA Complaint Number11637208 on January 20, 2025 regarding the internal engine failure of my 2021 Yukon Denial XL on January 3, 2025. After filing that Complaint, the engine in my Yukon was replaced by GMC in February 2025. After replacement, the engine was allegedly tested, given an oil cap change, and OK'd by the GMC dealership. On Sunday, April 12, 2026, the replacement engine in my Yukon failed without warning and left me (and my family members, who were also in the Yukon) stranded in the lane of traffic on the westbound College Drive exit of I-10. We had it towed to the GMC dealership (Royal Buick GMC) the same day, they diagnosed it, and according to text communications I received from them on April 14, 2026, the Yukon's engine needs to be replaced again because the engine internally failed - likely due to the failure of the engine's internal rod bearing. No one in my family feels safe in the Yukon anymore. GMC should not be allowed to replace these engines with more faulty engines. If something more is not done soon, people are going to die because of the wrecks caused by these faulty engines.

Reportado presuntamente: 1 lesión (según lo reportado a NHTSA). NHTSA #11731590

I was driving my yukon xl with my family and as I was coming to a stop at a stop light my Yukon started to shake violently and make a pinging noise. The check engine light came on and as I drove the car smoke started to come out the exhaust. Luckily I was not on the highway as this could have been a serious safety issue for me and my family. I had my car towed to the dealership and they said the 8th cylinder was completely seized and that it was due to the connecting rod and crankshaft. The engine needs to be replaced. I have maintained my Yukon regularly as recommended by the manufacturer and the car was driving great with no issues or warning of having issues until this engine failure suddenly happened.

NHTSA #11730271

The contact owns a 2021 GMC Yukon XL. The contact stated that while driving approximately 50 MPH and merging onto the freeway, the check engine warning started flashing and the vehicle started losing automotive power. The vehicle was driven back to the residence. After stopping the vehicle, the vehicle was idling roughly and was shaking abnormally. The vehicle was towed to a local dealer. The dealer diagnosed the vehicle and determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not informed of the failure. The contact researched online and became aware that there were two open investigations for engine failure that included the year and the model vehicle. The failure mileage was approximately 94,000.

NHTSA #11729886

Without any warning, the V8 L87 6.2 liter engine suddenly seized up, began shaking with significant reduced power. I was fortunate that I could drive slowly to safety and was not on the expressway. In my research, I understand this is related to a design/manufacturing issue with the connecting rods and crankshafts in this type of engine. As I investigated the issue, I found that 600,000 vehicles were recalled with the recall either completely replacing the engine or upgrading the oil type from standard to a thicker, higher-viscosity 0W-40 full synthetic to provide better protection under high stress, along with a new oil cap and filter. In our case, we were directed to change the oil and even with that change, we experienced this dangerous engine failure which cost us $12K ! For that cost of repair, we elected to have the engine replaced for about $1K more to get a 100K mile warranty on the engine. However, our additional concern with the replacement engine is they gave us a remanufactured version of the L87 and we have not found confirmation that they have adequately addressed the design/manufacturing flaws so may be vulnerable to the same seizing issue. We appreciate your attention to this widespread GM issue.

NHTSA #11734972

engine failure from the connecting rod and/or crankshaft. There is a current recall for this and my vehicle should be a part of it. I broke down on the side of a highway and had the vehicle towed to GMC dealership. There are now warning lights on with code P0016 and P0324

NHTSA #11725570

2021 Yukon Denali 6.2L V8, 137k miles- engine failure—driving down road 55mph and engine light came on, along with check esc and check traction warnings, vehicle began to rough idle and shake, motor knocking. Personally feel this is related to recall but my vin not included says dealership- I feel this recall is affecting way more vehicles than vin’s included. Dealership charged 220$ to plug it in, codes weren’t specific for problem. They are stating “lifter is bad and possibly cam, won’t know if the lifters scarred the cam until they take it apart” and charge me at least 6k is price quoted. No warnings at all before this happened. 137k miles so out of warranty. This put myself and kids in dangerous riding condition as I had to stop and have vehicle towed to dealership.

NHTSA #11727117

Lifter failure, resulting in costly repairs and possible catastrophic engine failure while driving. Vehicle has 78,000 miles and has been regularly serviced.

NHTSA #11721204

Right as I was coming up on my powertrain warranty, I began to have lifter issues. I had two repairs of the original lifters that ultimately were not successful. I ended up replacing all lifters with the updated version that apparently repaired previous lifter issues. That repair cost around ~$6K. After six weeks of reasonable driving, I noticed engine oil notices for low engine oil. I was told today at a local dealership that the vehicle now needs engine replacement at $14K-16K. Both the dealer and corporate confirmed my vehicle VIN didn't qualify for the propulsion recall. GMC corporate also said nothing can be done now that the vehicle is out of drive train warranty.

NHTSA #11715684

The contact owns a 2021 GMC Yukon XL. The contact stated that while driving at an undisclosed speed, the vehicle lost drive power with several unknown warning lights illuminated. The vehicle was towed to an independent mechanic, who determined that the engine had seized and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and advised the contact to report the failure to the NHTSA Hotline. The failure mileage was approximately 22,000.

NHTSA #11709915

The car suddenly experienced engine failure while driving at highway speed (about 70 mph). The check engine light, as well as several other warning lights (Traction control, electronic stability control, etc) came on immediately before a metal-on-metal clunking sound and then loss of power. I was able to pull the car over to the side of the highway, and because of the clunking sound, felt it was unsafe to drive further and had it towed to a local dealer. The car has about 42,000 miles on it, in perfectly maintained condition, with all services performed at the Dealer per the recommended schedule.

NHTSA #11710011

On December 1, 2025 at around 5pm CST, my 2021 GMC Yukon XL started making a squeeling noise then stopped while driving down the road. It left me stranded in the middle of the road. A P0016 CODE was produced and the engine light came on. I had the vehicle towed the next day to Stew Hanses GMC in Clive, Iowa. The engine was torn down for inspection and was told the rod bearing went bad and it had low oil even though I was within the window since the last oil change and having documented all necessary required maintenance. I was told the engine needs to be replaced and am in the process currently of Stew Hanson GMC replacing all necessary parts. I was told I do not have a recall on the vehicles vin number by GMC corporate and the GMC dealer. It is coming up on a month since the incident happened and vehicle towed to dealership. I do not have pictures from the dealer yet or final invoice as this is still in process. I wanted to document this somewhere.

NHTSA #11707025

I experienced complete engine failure at around 76000 miles similar to a current engine recall for 2021 to 2024 6.2L V8 engines. However, my engine isn't included in the current recall. I also experienced the fuel pump control module problem requiring replacement. Again there is a recall for 2021 to 2024 6.2L V8 engines and again my engine wasn't included in this recall.

NHTSA #11719979

Vehicle indicated that the suspension system was disabled. Vehicle then lost power and disabled itself driving through the Eisenhower Tunnel I-70 Colorado. This tunnel is over a mile and a half long. We called 911 as we were very worried we were going to have another vehicle crash into us as there are no breakdown lanes. The tunnel had to close to West Bound Interstate traffic and the vehicle had to be dragged up a tow truck because the back wheels were locked. The CDOT tow truck then dropped our vehicle outside the tunnel. We had a private tow company (again dragging the locked tires onto the next truck) take us home and to our personal repair shop. Vehicle was diagnosed as a blown engine. We then had to tow our vehicle, again dragging tires, to a GMC certified shop. We have spent $1502 on towing. This vehicle has approximately 57,000 miles and was 9 days out of the powertrain warranty. The repair shop has the same diagnoses and a dead battery because we could not turn the vehicle off. We have no vehicle to drive as ours sits at the repair shop waiting for parts. GM told me we were out of warranty and would not help. The dealership says GM may do cost sharing but will still cost us $2000.

NHTSA #11701711

While operating the vehicle at normal highway speed, the engine suddenly failed without warning. The vehicle immediately lost power, forcing me to coast to the shoulder. This created a dangerous situation in active traffic. The vehicle was later towed to an authorized GM dealership. The dealer inspected the vehicle but refused to provide assistance or take responsibility for the engine failure. Based on the symptoms and information available, the failure appears to be caused by a known GM engine defect. This issue poses a serious safety hazard since the engine can fail abruptly during highway driving, increasing the risk of accidents or injury. I am requesting that NHTSA investigate this matter and that GM be held accountable for addressing this known defect.

NHTSA #11692069

Subject: Assistance Request – Vehicle Engine Failure Shortly After Purchase I am reaching out for assistance regarding a serious issue with a vehicle I recently purchased. Approximately two weeks after purchasing the vehicle, the engine failed completely. I was driving it to pick up my daughter from school and when I went to go from stopping at a red light the engine light started flashing, the car said lowering for stabilization, and it started smoking and wouldn't go. I was almost hit due to the engine just stalling. When I was able to drive it was shaking and I couldn't go past 30. I made it to the dealership that was 7 mins away and had a guy from service come out. There wasn't any warnings before the engine went out. The dealership has informed me that I am responsible for the repair cost even though vehicles of the same year, make, and model have an active engine recall for this exact issue. Despite this, the dealership and manufacturer have refused to cover or assist with the repair, and there is currently no estimated time for replacement parts or a loaner vehicle. I have documentation from Greg Hubler on there diagnosis. I believe this situation may involve a warranty, recall, or consumer protection concern, and I would like to know what steps I can take or if your office can assist with resolving this matter.

NHTSA #11692285

The engine has a knocking noise. Very noticeable. Started around 3 weeks ago and has done it on multiple occasions.

NHTSA #11688518

Low engine oil message keeps flashing after less than 2,000 miles of driver. Excessive oil consumption. Took vehicle to GMC dealership and it was confirmed that an engine replacement or replacement of the pistons and rings is necessary. Only 77,000 miles on the vehicle. My car is currently not a part of the massive recall.

NHTSA #11703333

On August 21, 2025, my vehicle engine died in Connecticut when I was taking my son back to college. I had to have it towed back to South Jersey, where I live. The dealer informed me that my engine failed due to a major recall. I was without my vehicle for three months while they waited for a new engine. My car was returned to me with a refurbished engine.

NHTSA #11719634

On Thursday August 14 while driving our traction control light and engine light came on along with the ESC light while traveling out of state. The car felt like we were driving on a rumble strip. We immediately took it to the nearest auto repair shop, only a few minutes away. They reset the battery and dash lights and we took it for a test drive. All the lights came back on after a couple of feet and loud knocking sounds started. Our emissions light then also came on and a strong exhaust smell was emitted. Each time the engine was started the knocking grew louder and the engine was severely struggling and sounded very wrong . The shop put their diagnostic tool to use and identified misfiring on cylinder 5. Upon further inspection they identified camshaft irreparable failure. We had it towed to the Platteville WI GMC Dealership Friday Aug 15. Where they confirmed camshaft failure and informed us our engine needed total replacement. Our safety was at risk since our engine failed while exiting the highway.

NHTSA #11682903

Been working with dealership on engine performance for a year, recall is delayed because of no available parts. I had bought a warranty that replaced the lifters and cam. Also this year the transmission, radiator, pully and belt were all replaced. Engine blew up last night and is back at dealership. I paid $80,000 for this vehicle and have had major issue after major issue with it. Looking into seeing if it qualifies as a lemon. Lucky was going slow when it happened and it didn't cause an accident. Could not get the vehicle into neutral to tow it.

NHTSA #11679012

Vehicle was on highway when alerts started going off and a weird noise started. It scared the occupants as they were going 70mph on the highway when it happened. Luckily they were able to maneuver off the road in time and parked at a convenient store. Towed vehicle to dealership and metal was in the oil as a part failed in the engine. New engine was ordered by the dealership and installed. There were no prior warnings and the vehicle was completely maintained by the dealership. Engine failure in less than 5 years.

NHTSA #11723034

GM is unable to remedy this recall. I have been waiting since April 2025 (when the recall was issued) to our family vehicle in to be corrected. This is a serious recall that GM is not taking serious, and this is our family car.

NHTSA #11681036

GMC does not seem to care about fixing this major recall. It has been 3 months and they have no fix yet.

NHTSA #11673181

The contact owns a 2021 GMC Yukon XL. The contact stated that while driving at an undisclosed speed, there was an abnormally loud sound coming from the engine compartment. The contact stated that the vehicle lost motive power, prompting the contact to pull over to the shoulder of the roadway. The check engine warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the lifter in cylinder #8, resulting in damages to the engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. After investigating the failure, the contact related the failure to Technical Service Bulletin: N212353840. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 79,000.

NHTSA #11669184

Complete engine failure and lock up driving 70MPH. I was very lucky to not wreck the vehicle when this occurred with my family of 5 present. Had towed to the dealership and diagnostics performed. Diagnostics confirmed crankshaft issue and complete engine failure requiring engine replacement. I was informed that this was the same issue that is under current recall, but the 5.3L is not part of it. This is the same crankshaft issue that has been recalled in over 700K 6.2L GM motors. I am being told that the 5.3L engine is not covered under the recall and i am 100% responsible for all costs related. I want this 5.3L issue reported and documented to help extend the recall to the 5.3L engines in the future

NHTSA #11680893

Engine started taking extra oil then weeks later cam shaft & lifters when out

NHTSA #11671295

I am writing to formally file a complaint regarding a serious issue with my 2021 GMC Yukon XL, which is equipped with the 6.2L V8 gasoline engine and falls under Recall N252494000. The vehicle is losing power during operation and the engine is producing a loud clattering noise, raising major concerns about its safety, drivability, and long-term reliability. Despite these issues being clearly present, the vehicle recently passed an inspection, which raises questions about the adequacy of the diagnostic and repair procedures related to this recall. This situation is both frustrating and alarming. I am concerned that either the inspection was insufficient or the recall-related defect has not been properly identified or addressed. I respectfully request the following: A thorough re-inspection and diagnosis of the engine under the scope of Recall N252494000. Immediate repairs or replacement of defective parts at no cost. A clear explanation of why the vehicle passed inspection despite these evident issues. Reimbursement for any costs incurred if the recall defect caused further engine damage.

NHTSA #11667218

I am writing to formally file a complaint regarding a serious issue with my 2021 GMC Yukon XL, equipped with the 6.2L V8 gasoline engine and covered under Recall N252494000. The vehicle is experiencing significant power loss while driving, and the engine is making a loud clattering noise, which raises serious concerns about the vehicle’s safety, performance, and long-term durability. These symptoms are ongoing and have severely affected the drivability of the vehicle. Despite these clear issues, the vehicle recently passed a dealership inspection. In an effort to improve performance, a higher viscosity oil change was performed and a new oil cap installed. Unfortunately, these measures have not resolved the problem. The vehicle continues to run poorly and does not perform as expected from a vehicle of this age and mileage. I respectfully request the following: A thorough re-evaluation of the vehicle in relation to Recall N252494000. Immediate corrective action, including repair or replacement of any defective engine components. A detailed explanation of how the vehicle could have passed inspection with such evident performance and mechanical issues. Reimbursement for any out-of-pocket expenses incurred due to this ongoing problem.

NHTSA #11667224

Vehicle: 2021 GMC Yukon XL VIN: [XXX] Recall ID: 25V274 (GM Recall N25249400) Mileage: Approx. 35,000 My 2021 GMC Yukon XL was recalled for a potential engine defect. On June 9, 2025, the dealership (Carol Buick GMC in Florida) determined that my vehicle was unsafe to drive and that the engine needed to be replaced under GM Recall N25249400. GM has not delivered a timely fix. The engine remains on national backorder, and as of July 31, 2025, the vehicle has been out of service for over 6 weeks. I was provided a loaner vehicle, but my own vehicle remains undrivable, and no repair ETA has been provided. GM opened two internal case numbers (#[XXX] and #[XXX]), but despite repeated follow-ups, I have received no estimated return date or formal remedy timeline. I believe this delay violates the federal requirement to provide a timely recall remedy under NHTSA regulations, and I am requesting an investigation or compliance review of GM's handling of this recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA #11677545

Vehicle has almost 75000 miles. No warnings whatsoever, the GMC app actually reported the vehicle has no issues and all systems are working. The engine began to knock, the transmission was not shifting well, traction control stopped working. Took the vehicle to the local dealership who called me and said it was complete engine failure that is going to require a brand new engine. All of the maintenance is up to date.

NHTSA #11665935

I had a complete engine failure in my 2021 Yukon XL Denali while driving 70mph on the highway. My vehicle warning lights all of a sudden came on and my cruise control was disengaged. My vehicle started shaking and then started smoking. It was taken to our GMC dealership immediately and it was discovered that the engine had failed even though my VIN is not listed in the L87 Recall. No warning lights appeared prior to this failure. I will attached our invoice from the dealership and their description of the problems.

NHTSA #11692142

The contact owns a 2021 GMC Yukon XL. The contact stated that when the vehicle was started, there was a loud sound coming from the engine compartment. The contact stated that when the vehicle was driven around the block, the sound was still present coming from the engine compartment. The vehicle was taken to an independent mechanic where an oil change was performed but the failure persisted. The vehicle was then taken to the residence. The vehicle was next taken to a dealer where it was diagnosed, and metal shavings were found in the oil, possibly coming from the crank bearing or connecting rod bearing. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 100,371.

NHTSA #11663613

This vehicle is not included in the L87 engine recall, yet I have lifter noise and excessive oil consumption. They might have the dates and lots wrong.

NHTSA #11659706

We were driving on the interstate and the car completely shut off. It went to the 'restart engine' screen. My husband put it in neutral and tried to coast off the interstate almost getting hit by cars going 70+ mph. Cars were swerving not to hit us as we coasted across three lanes. One car almost hit another car because they quickly tried to go around us because of our decreasing speed and made that car swerve into the other lane. We ended up only inches off the right lane. We had 2 teenagers and our 1 year old baby in the car with us in the Florida heat. Sitting in that car was truly traumatizing because every semi that passed us, the whole car was shaking because we were so close to the line. I just knew that someone was going to veer off inches and wipe us completely out. Because the engine just shut off, we barely made it off the road so cars were honking at us because they knew the danger we were in not being far enough off the shoulder. We all had to climb out the doors on the right because opening the left side doors would be in the right lane of the interstate. There we sat for 2 hours in 99 degree weather with a 1 year old (who also got bit by ants being in the high grassy area off the interstate) waiting for a tow truck to pick up the Yukon to tow it in to a location that isn't even where we live. We had to wait on someone to come pick us up that could hold 5 people and a car seat plus all of our sports equipment that we had for our tournament that weekend that we were headed home from. A nightmare, truly a nightmare. There was no warning, no lights came on, no heads up that the car was about to completely shut off going 75 mph. It just did, without warning. I was never informed about the POTENTIAL of a recall, or I would have been the first one at the door to get it checked out. My family was put in tremendous danger because of the irresponsibility of GMC. This is a nightmare, truly a nightmare.

NHTSA #11657217

On April 20th, 2025 while accelerating from a stop light, my vehicle (2021 GMC Yukon Denali XL, 6.2L V8) started making a ticking noise and the service engine light started flashing. I was within a few minutes of my house and limped my vehicle home. The next morning, I started it and it exhibited the same symptoms. I called my local GMC Dealer, Wright Buick GMC, and was advised to have the vehicle towed to them. It was towed to the dealership and within a few days I was advised that the engine needed replaced. I had heard a story that there was a pending recall, so I had hoped that this would resolve itself without a bill to me. unfortunately I was advised that there was no actual outcome on how to handle recalls, so if I wanted my vehicle back, I would have to pay the $11K for replacement as I was outside of my power train warranty (I had roughly 73,000 miles on my car). I have hoped for some resolution to include my vehicle in this recall but I have not yet received any word from GMC.

NHTSA #11733913

With no warning, the engine died in my vehicle. I was in the middle of a busy intersection at red light with my children. No sensors ever indicated there was a problem. The car could not be put into neutral so it couldn’t be moved until a tow truck came.

NHTSA #11656062

The lifters in the engine are failing

NHTSA #11658318

The contact owns a 2021 GMC Yukon XL. The contact stated while driving 80 MPH, the engine was running unusually rough, and there were several unknown warning lights illuminated. The vehicle was taken to an independent mechanic and was diagnosed with a fractured valve push down lifter. The contact was informed that the valve push down lifter needed to be replaced. The vehicle was not repaired. The contact was advised to take the vehicle to the dealer for assistance. The vehicle was towed to the dealer where it was diagnosed with a fractured valve push down lifter and a failed cam shaft. The contact was informed that the valve push down lifter and the cam shaft needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure but provided no assistance. The contact referenced an unknown recall repair, which had a similar failure description, however the VIN was not associated with the recall. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 109,000.

NHTSA #11659467

Engine failed while driving on interstate. Vehicle could not be put in neutral because engine has to be running to shift. Difficult to tow. 4 hours away from home. Took to nearest dealer. Hit by hail storm sitting on dealer lot with $8000 hail damage. Still making payments and have no vehicle to drive.

NHTSA #11657779

Driving on the highway going 65 mph the engine started making a ticking noise and all of the sudden the car died and barely made it to the shoulder and after that the car wouldn’t start or nothing. Now the dealership had the car for a couple weeks already and still no update on when it’s getting fixed

NHTSA #11654828

The engine failed, specifically the internal engine rod, which apparently came unhinged and caused extensive internal damage. This led to a complete engine failure. The failure was sudden and extreme. The vehicle is currently located at a GMC dealership and remains available for inspection if needed. The dealership also provided oil samples and internal findings to GM for further review.This failure put my safety and my children’s safety at serious risk. I regularly drive this vehicle alone with my children to remote areas—one of the main reasons I purchased this vehicle was because it is marketed as safe, reliable, and built for families. The engine shut off twice while driving before I could get it to a shop, and I was very fortunate it didn't happen on the highway or in a location where I couldn’t pull over safely. Had this occurred at high speeds or in heavy traffic, it could have resulted in a crash or left us stranded in a dangerous situation.Yes. The issue was first diagnosed as catastrophic engine failure by an independent auto shop. They advised me to take the vehicle directly to the GMC dealer. Once inspected, the GMC dealership confirmed full engine failure, radiator failure, and additional issues. They explicitly told me not to drive the vehicle again due to the severity of the internal engine damage. The vehicle is still at their shop- three weeks later. I’m not sure if the manufacturer (GM) has physically inspected the vehicle. However, the dealership has submitted documentation and internal engine testing results—including oil samples—to GM on my behalf. To my knowledge, there has been no inspection by police or insurance representatives.There were no warning lamps, error messages, or dashboard alerts before or during the failure. The only symptom was a very subtle and barely audible noise that appeared shortly before the failure. Within approximately 40 miles, that sound escalated dramatically into a loud rattling. The engine shut off on its own twi

NHTSA #11654567

Loss of propulsion, engine over consuming oil per dealership inspection.

NHTSA #11662654

The contact owns a 2021 GMC Yukon XL. The contact stated that while driving at various speeds, there was grey smoke coming from the exhaust pipes. The check engine warning light was illuminated. The vehicle was taken to a local dealer where it was diagnosed and determined that the engine needed to be replaced. The vehicle was not repaired. The vehicle was taken to a local independent mechanic for a second opinion, and it was diagnosed and determined that the engine and brake pads needed to be replaced. The vehicle was not repaired. Upon further investigation, the contact related the failure to an unstated recall; however, the VIN was not included. The manufacturer was made aware of the failure. The failure mileage was approximately 125,000.

NHTSA #11666039

My wife was driving down the road with my Daughter and the engine simply stopped running without warning. She was able to coast to a stop on the side of the road and engage her hazard lights. When she tried to restart the engine it just cranked but never started. We had it towed to a mechanic and the mechanic told us that the engine is seized and we likely need a new engine, total cost of over $20,000. This vehicle should not be having this type of issue at 70,000 miles. If they were on a busy highway in the middle of rush hour it would have been a very dangerous situation.

NHTSA #11644898

We purchased our 2021 GMC Yukon used from a dealership 1 year ago with zero issues. 3 days ago out of no where there is a very loud squeaking sound in the front under the hood. No engine or warning lights just the sound. We had a mechanic check it and a part inside the tansmission is broke. NOT fixable, MUST be replaced.......

NHTSA #11645559

Our family of 6 were traveling home on the Freeway, from a family road trip going about 75 mph. The engine revved up and then the entire car all electronics went black. And then flashed back on. A warning told me to "Start Engine" I attempted to, and it would not turn over. I was able to get to the shoulder to get us out of the hi-speed traffic. I put our hazards on, and the "Start Engine" warning popped up again. I attempted to start the engine again and it wouldn't turn over. All the warnings started to flash things like "check transmission, check battery.." etc. We asked our kids to stay buckled, because of the hi-speed traffic, and that it was dark outside, and we were in more of rural area. We called the nearest tow company, and had to wait about 30-40 minutes for him to get to us. The tow truck operator was not able to get the car in neutral to be able to get the Yukon on to the tow truck, he eventually got it on. The next morning the Service Tech called and said the car was completely dead when he got to it. Then, he called me later in the day and said he was able to look at the vehicle and run diagnostics and said the engine had seized. My car is less than 4 years old and had 66k miles. I had it serviced right before our family road trip at 64k miles. We have been the only owners and have always serviced it through GMC Service Centers Only. *Note*We had complained multiple times of a squeaking/chirping noise coming from the engine. Since we first received it. The service center kept the vehicle a couple of times overnight to try and diagnose. We had to pay for a new belt replacement, and the squeaking/chirping noise was never resolved. We wonder if this was a preexisting issue.

NHTSA #11645509

On [XXX] while driving my 2021 GMC Yukon Denali to work, the vehicle suddenly lost power without warning. I had it towed to the dealership, where I was informed that the fuse pack needed replacement. Less than 36 hours after getting my vehicle back, I experienced another critical failure—while driving, the traction control light and check engine light came on, and the engine began making a loud clacking noise. Upon returning it to the dealership, I was told that the vehicle required a complete engine replacement. Prior to this incident, my Yukon had no known mechanical issues. However, despite the vehicle being only three years old and under GMC’s 5-year/60,000-mile PowerTrain warranty, the failure occurred at 65,722 miles—just over the coverage limit. GMC has acknowledged nearly 900,000 reported issues related to this engine defect, yet instead of issuing a full recall, I was only offered 60% coverage, leaving me with over $5,000 in out-of-pocket costs for an issue that is clearly a widespread manufacturing defect. I purchased this vehicle for its reputation of reliability and safety, especially as the primary mode of transportation for my family of five, with no nearby relatives to rely on. Given the known defects, it is unacceptable that GMC has failed to take full responsibility. I am formally requesting that GMC cover the full cost of the engine replacement and issue a recall to prevent other consumers from experiencing the same failure. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA #11643618

I was driving down the highway when the engine started making a very loud rattling noise. I was able to almost get out of the travel lane. The engine does not restart and is seized. The temperature was 10°f and the closest two was 3 hours away and the vehicle was partially blocking the 2 lane highway on the right side. Unknown inspection status by manufacturer. There was no warning light at any time even after the shutdown. The symptom of the intense loud rattling occurred approximately 60 seconds before complete failure. Just enough time to get to a pull out off a bridge.

NHTSA #11641520

Car shutdown and shifted on its own down to neutral from drive. Was driving on highway. Never was able to shift to another gear after pulling over. Computer board was completely blank. Engine would never restart. This is the second engine to go out in this vehicle.

NHTSA #11644671

The contact owns a 2021 GMC Yukon XL. The contact stated that while driving 65 MPH, the vehicle shut off with the message to restart the vehicle displayed. The contact was able to pull over and restart the vehicle after several attempts; however, the failure reoccurred soon after the vehicle was restarted. Due to the failure, the vehicle was initially towed to a dealer but was later towed to an independent mechanic. The mechanic performed a diagnostic test and diagnosed the vehicle with engine failure. The vehicle remained in the possession of the independent mechanic. The manufacturer was not notified of the failure. The failure mileage was approximately 60,000.

NHTSA #11638008

My vehicle is equipped with a 6.2L L87 engine. I have taken this to the gmc dealership in complaint of non consistent power of the engine and a vibration of the engine. The dealership believes it was the brakes and they were replaced along with the rotors. The problem still persists I feel after reading the stories of how other engines have failed that are L87, this is a similar problem but not covered under the recent recall.

NHTSA #11659856

On Friday, [XXX] at approximately [XXX], my family was traveling on [XXX] at [XXX} in Colorado. Our 2021 Yukon Denali XL all of a sudden shut down without warning while going up the mountain at a spot where there was no shoulder. The car would not restart despite multiple attempts. We called 911 several times and waited in the lane of interstate traffic for approximately 45 minutes for emergency vehicles to arrive to block the lane. It was one of the most harrowing experiences of our lives. Our car was nearly hit five times by semi-trucks and cars that could not change lanes fast enough, and all we could do was put our flashers on, honk the horn at incoming cars, and tell our four children to lean back in the seat and prepare for impact. When the tow truck arrived, they could not get the car in neutral and the tow truck had to winch the Yukon on the flatbed to tow it. The car was towed to Raton, New Mexico. The mechanic said that he tried to put a bar on the engine and turn it over but it would not move. The vehicle is still at the mechanic’s shop in Raton, New Mexico. I am in the process of trying to get it towed to a GMC dealership. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA #11637208

Our 6.2L failed unexpectedly after regular maintenance. No warning, just the sound of knocking in the engine then loss of power and bad sounds from the engine. Stranded on side of road. GM wants to replace the entire engine without opening engine, claiming lower engine damage. Technicians say this is spun rod bearing problem that is very common. Dangerous and poor quality.

NHTSA #11636676

Manufacturer Recall NumberN252494000 NHTSA Recall Number25V274 Recall StatusRecall Incomplete, remedy not yet available

NHTSA #11684916

Engine failure of lifters and piston rings at 58000 miles. Engine failure at highway speeds causing complete loss of power on highway. It is completely unacceptable to have such catastrophic engine failure on such a new vehicle.

NHTSA #11632104

Complete engine failure due to lifters going bad in return had to replace the entire thing

NHTSA #11652181

We were driving on the interstate outside of Chattanooga TN when our car went into neutral while we were in the left hand lane next to a 18 wheeler. My husband was driving and we have our four children and dog in the car. We lost acceleration. My husband was successful in getting us off the highway and onto the shoulder. The car started again and we tried to make it to the next exit when it went into neutral again and lost power. This was on [XXX]. We had it towed to the nearest dealer, Integrity Motors. They called us and said that it threw a rod and that the engine was broken and the whole engine would need to be replaced. After replacing the engine (it took 2 months) we picked the car up only to have the engine light come on. I took it to Autozone where they ran the codes and told me that the fuel injectors were bad and possibly the intake manifold gasket. I called Chattanooga and they told me that I should take it to the nearest GMC dealer. Parks GMC in Greenville inspected the car and we had to put in 8 fuel injectors. I have documentation of all of these issues. There was no warning light or any warning that our engine was about to shut down. We could have been in a serious wreck with the 18 wheeler with possible loss of life or injury. We have had significant financial loss. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA #11636704

On or about September 28 while traveling N on US 67 it was necessary to stop at a construction stop light. As I started to accelerate a pinging started. I continued roughly 10 miles, to my daughters house. The truck was flat bedded back to Jones Auto Center in Monmouth Ill. The found a bent push rod and bad lifter in the #1 Cyl. Repairs were done per the attached Invoice. Milage was 103,000. On 11/5/2024 while traveling on US 116 @ 65+-MPH the engine froze, with instant stoppage. Flatbedded to Myler Automotive where the engine was replaced per the attached Invoices. Milage was 105907.

NHTSA #11639420

Check engine light on, Abnormal engine noise and very significant loss of power. Info registered in the repair invoice: tech verify customer concern, check for code found code p0300 and looking to the live data found miss fire on cylinder number 6, tech swap the coil and spark plug with wire, miss fire still on the same cylinder, tech inspect the injector no problem found, remove the valve cover for inspection found, that the rocker arms is loose, customer approve tear down, tech remove the head on the right side to inspect the lifter and the camshaft, tech found damage on the camshaft, camshaft replacement and lifter is necessary, customer decline repair, tech assemble the engine back and returned to the customer. Customer decide to replace the engine, tech replace the engine test to verify repair vehicle working as design

NHTSA #11668041

While driving my Yukon it felt like there was an issue while it was trying to shift gears. the vehicle would sort of jerk while it was shifting. there also began to have a knocking sound as I drove. I had my children in the car, making this a more stressful situation. Having issues while driving on a highway with other vehicles driving at high speeds. Your vehicle having issues accelerating onto said highway as well. This all happened with only 68,445 miles on the vehicle. I called to schedule an appointment, drove it into the GM dealership. They stated that the lifters needed to be replaced and it would not be covered. As well as a rental vehicle not being covered, so both items came out of pocket. As I drove home from the dealership after they assured me everything was great, the engine light came on. Brought it back into the dealership to fixed again! This time it was the catalyst converter. This issue was covered by warranty somehow even though they stated it was tied together.

NHTSA #11711888

While my [XXX] son was driving my 2021 GMC Yukon Denali XL, the engine failed suddenly without warning. The vehicle lost power completely and became inoperable, leaving them stranded far from home. This posed a significant safety risk to my family, especially given the location and time of day. There were no warning lights or messages prior to the failure. The vehicle was towed to a GMC-certified dealership, where the issue was diagnosed as a complete engine failure. The dealer confirmed that internal engine components were damaged and the entire engine required replacement. The dealership performed the repair and confirmed that the issue was consistent with known defects now acknowledged by GM in their 2025 recall affecting vehicles with the 6.2L V8 engine. The problem has been reproduced and confirmed by the dealership. The defective engine is no longer available for inspection, as it was removed and replaced during service. The repair was performed at my personal expense prior to the recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA #11667051

The engine failed while driving. Dealership reviewed the issue and a new engine had to be installed to replace the defective motor. It failed due to a camshaft/lifter failure. After talking with the dealership, this appears to be a common failure in the 6.2L motors. It resulted in a bill in excess of $12,000 to repair. Similar to recall N252494000, the 6.2L motor has defective components causing premature failure that should be recalled.

NHTSA #11660894

The contact owns a 2021 GMC Yukon XL. The contact stated that while driving 6 MPH, the vehicle experienced a complete loss of automotive power and all electrical components shut off, with the check engine warning light illuminated. The vehicle was towed to an independent mechanic where the vehicle was diagnosed, and the contact was informed that the engine had failed and needed to be towed to a local dealer where the vehicle was diagnosed a second time, and the contact was advised that the engine had failed and needed to be replaced. The vehicle was not repaired. The contact referenced NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING) as a possible cause of the failure. The manufacturer was notified of the failure. The approximate failure mileage was 133,000.

NHTSA #11689531

The contact owns a 2021 GMC Yukon XL. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power. No warning lights were illuminated. The vehicle was towed to a local dealer, where it was diagnosed, and determined that the engine needed to be replaced. 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 vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 66,000.

NHTSA #11688851

The contact owns a 2021 GMC Yukon XL. The contact stated that after start-up, the vehicle was driving roughly before the vehicle stalled. The vehicle was towed to the local dealer, who diagnosed the vehicle with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not yet repaired. The contact had previously received notification of NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING). The mechanic related the failure to the recall, but parts were not yet available for the recall repair. The failure mileage was 50,000.

NHTSA #11682102

The contact owns a 2021 GMC Yukon XL. The contact received notification of NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING). The dealer was contacted; however, the contact was informed that parts were not yet available. The vehicle was not repaired. The manufacturer was contacted about parts not being available. The contact stated that while driving at 70 MPH, the vehicle lost automotive power. There was no warning light illuminated. The contact pulled over, and the vehicle was towed to a local dealer. The vehicle was not repaired. The failure mileage was unknown.

NHTSA #11681671

The contact owns a 2021 GMC Yukon. The vehicle was taken to the local dealer for a routine oil change. While driving, the oil low light illuminated. The vehicle was burning an excessive amount of oil. The local dealer was contacted again, but the vehicle was not diagnosed or repaired. The manufacturer was contacted, who referred to the local dealer. The failure mileage was approximately 149,000.

NHTSA #11740801

The contact owns a 2021 GMC Yukon XL. 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. VIN tool confirms parts not available.

NHTSA #11672209

The contact owns a 2021 GMC Yukon XL. The contact stated while driving at an undisclosed speed, the vehicle inadvertently lost motive power, prompting the contact to discontinue driving the vehicle. The check engine warning light was illuminated. The vehicle was taken to the dealer, who diagnosed failures with the lifters and camshaft, resulting in damages to the engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); but the VIN was not included. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 100,000.

NHTSA #11659087

The contact owns a 2021 GMC Yukon XL. The contact stated while starting the vehicle, the engine made an abnormal sound. Additionally, the low engine oil warning light was illuminated while driving. The vehicle was taken to the dealer, who diagnosed that the lifters and camshafts needed to be replaced. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); and the VIN was included in the recall; however, the contact had not yet received a notification. The manufacturer was not made aware of the failure. The failure mileage was approximately 24,000. VIN tool confirms parts not available.

NHTSA #11657334

The contact owns a 2021 GMC Yukon XL. 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 local dealer was contacted. 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.

NHTSA #11676129

The contact owns a 2021 GMC Yukon XL. The contact stated while her husband was driving at an undisclosed speed, the engine made an abnormal loud sound, and the vehicle became undrivable. The vehicle was taken to Midas, where an unknown repair was performed. Additionally, the contact stated while driving 50-55 MPH on the expressway, the vehicle shuddered significantly, and the engine made an abnormal loud knocking sound. Unknown warning lights were illuminated. The contact was able to exit the expressway and drove back to Midas, where the contact was informed that the engine needed to be replaced, and the mechanic provided an estimated fee for the repair. The vehicle was towed to the dealer, where it was diagnosed that the engine needed to be replaced; however, the part was not available. The vehicle remained at the dealer for approximately three months. The vehicle was not repaired. The contact related the failure to NHTSA Action Number: PE25001(Engine, Engine and Engine and Cooling). The manufacturer was notified of the failure and informed that the part was not available. The failure mileage was approximately 73,000.

NHTSA #11662402

The contact owns a 2021 GMC Yukon XL. 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 vehicle was experiencing excessive oil consumption, and the engine made an abnormal sound while driving at undisclosed speeds. The vehicle was taken to the dealer but was not diagnosed or repaired. 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 failure mileage was approximately 35,000. VIN tool confirms parts not available.

NHTSA #11668716

The contact owns a 2021 GMC Yukon XL. The contact stated while his wife was driving 25 MPH and depressing the accelerator pedal, the vehicle failed to respond. The contact pulled over to the side of a parking lot waiting for towing assistance. A dealer was contacted. The vehicle was towed to a dealer where it was diagnosed and determined that the engine needed to be replaced. The vehicle was not repaired. 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 but offered no assistance. The contact was referred to the NHTSA Hotline for assistance. The failure mileage was 60,000.

NHTSA #11668114

While driving my 2021 GMC Yukon XL, the vehicle unexpectedly lost acceleration. After lifting off the gas pedal, it jolted forward, triggered a “Reduced Performance” dashboard warning, and remained in what felt like second gear, refusing to shift. I immediately pulled into a parking spot; when I attempted to reverse, the vehicle would not move backward. As you may imagine, this was a major safety concern, as I had my [XXX] and [XXX] children in the vehicle with me. I had the Yukon inspected at a GMC dealership, where a technician confirmed the issue originated from a faulty transmission valve body. My independent research has revealed this to be a widespread defect in the 2021 Yukon XL, prompting GM to issue Special CoverageXXX, which explicitly covers valve-body replacements for 2021 Yukon XLs experiencing reduced performance. Despite meeting these criteria and receiving identical diagnostic alerts, I was informed that my VIN is not covered. I am formally requesting that this safety-related defect—widespread among this model year—be recognized and my VIN included under Special Coverage XXX. The valve body causing the loss of propulsion in my Yukon XL is exactly the same defective component GM has acknowledged and is covering under this program. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA #11705598

Sin narrativa detallada reportada.

NHTSA #11689727

The contact owns a 2021 GMC Yukon XL. The contact stated while driving 70 MPH, the vehicle shuddered abnormally with the check engine warning light illuminated. The contact received notification of NHTSA Campaign Number: 24V797000 (Power Train); however, the part to do the recall repair was not yet available. The vehicle was taken to the dealer where it was diagnosed and determined that the transmission control valve had failed and needed to the replaced. The vehicle was not repaired. The dealer confirmed that parts were not yet available. The manufacturer was not made aware of the failure. The approximate failure mileage was 66,000. Parts distribution disconnect.

NHTSA #11672905

Transmission issue - 2021 Yukon XL broke down 5/6/25 while driving with 2 of our children in the vehicle. the RPMs skyrocketed but the vehicle wouldn't go. was hard shifting and speed would not exceed 35ish MPH. message popped up on vehicle that said acceleration throttled and engine light came on. Took it to dealership and it is a known problem. Transmission needs a valve body replacement. This part is on national backorder for months. Spoke with the dealership on 6/5/25 and they still do not have an ETA. They ordered one on 3/19/25 that still has not arrived. I received a case number from GM but they are extremely unhelpful.

NHTSA #11665130

Vehicle wont go in reverse and skips gears and an error came up to reduce acceleration. - Valve body Control assembly needing to be replaced.

NHTSA #11654589

Vehicle would not go in Reverse. Rear tires locked up. When I went forward an error came up "Reduce acceleration" and went into limp mode while driving down the highway and shifted hard and almost caused an accident. Bought into dealer and they found that it needs a valve body assembly Part which is on backorder with no ETA. Currently been waiting for a month and still no ETA on Part. This should be a recall for 5.3L 10 speed. .

NHTSA #11658536

The transmission went out. Torque converter put metal all through the transmission. While driving at highway speeds in traffic almost got rear ended

NHTSA #11652284

The contact owns a 2021 GMC Yukon. The contact stated that while driving at an undisclosed speed, the transmission warning light illuminated. The vehicle was taken to a local dealer where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was not repaired and remained at the local dealer for further investigation. Upon further investigation, the contact related the failure to NHTSA Campaign Number: 24V839000 (Power Train); however, the VIN was not included. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 63,000.

NHTSA #11639641

Lifter failure with cylinder #6. Car violently shook prior to this failure. No engine lights or messages until the next day when tried to drive. Ended up towing car to dealer. Car had 76k miles on it. Recall on 6.2L, but not on the 5.3L which is not immune to this same issue as the 6.2L engine.

NHTSA #11707343

Vehicle Information Make: GMC Model: Yukon XL Denali Year: 2021 VIN: [XXX] 1. What component or system failed or malfunctioned, and is it available for inspection upon request? The engine failed due to defective lifters and camshaft components, along with excessive oil consumption. These issues rendered the vehicle inoperable and required over $10,000 in repairs. The failed components are available for inspection upon request. 2. How was your safety or the safety of others put at risk? The engine failure occurred while the vehicle was in motion, creating a dangerous situation for my family and other drivers. Sudden loss of engine power could have led to a collision or left us stranded in unsafe conditions. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. The issue was diagnosed and confirmed by DeFouw GMC in Lafayette, Indiana. GMC has acknowledged the defect and agreed to cover all but $2,000 of the repair costs. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? The vehicle has been inspected by DeFouw GMC. GMC is aware of the issue under Case #[XXX]. No inspections have been conducted by police or insurance representatives. 5. Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? No, it all happened at once. The vehicle was extremely well cared for, and GM has all of the oil change records. Additional Comments: We have been without our family vehicle since [XXX], and GMC has not provided an estimated arrival date for the replacement engine. We are now entering month four without a vehicle, which has severely impacted our family’s mobility and safety. This delay is unacceptable and reflects poorly on GMC’s commitment to customer safety and service. Has also cost us over $10,000 out of pocket, which I will seek reimbursement for legally, if I must. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA #11695942

The Yukon has stopped while driving twice. The check engine light came on, the dealership says there is an oil problem and the oil pump is bad along with bad lifters. There is wear to the motor as well.

NHTSA #11680443

I am writing to formally report a serious issue with my 2021 GMC Yukon XL. The vehicle has developed multiple severe problems, including: •Significant loss of engine power •Noticeable engine knocking noises •Transmission slipping while driving •Transmission movement even when the vehicle is at a full stop These issues not only impair the performance of the vehicle but also raise serious safety concerns. The loss of power and the slipping transmission could lead to a dangerous situation while driving, placing both myself and other motorists at risk.

NHTSA #11658070

My lifters collapsed and camshaft got damaged AND my cylinder in the bottom of my engine failed also. I know there is a recall for engine failure on the exact year make and model as my vehicle, the only difference is the liter engine. Mine and my 3 children’s safety were all put at risk when we were left stranded on the side of the road 6 hours from home The problem was inspected by GMC themselves and the tech admitted to this being a big problem with motors like mine yet they are offering ZERO help to make it right with me because my liter engine isn’t on the recall list even though many are acknowledging its happening with the 5.3 liter engines as well. My engine has failed as part of GMCs negligence. There were absolutely zero warning signs prior to this happening

NHTSA #11658638

The contact owns a 2021 GMC Yukon XL. The contact stated while driving approximately 3-5 MPH, the vehicle unintendedly shifted to neutral, and the vehicle stalled immediately. The contact stated that the vehicle failed to restart. The vehicle was towed to the dealer and was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired because the engine was on backorder. The manufacturer was informed of the failure and confirmed that the VIN was not under recall. The manufacturer opened a case for the failure. The failure mileage was approximately 80,000. The VIN was unavailable.

NHTSA #11655373

On [XXX], my wife and our children were driving back home from Barstow when the vehicle stalled on the [XXX] freeway near Colton, CA. While driving at approximately 50–65 mph, we heard a clanking noise coming from the engine, followed by multiple warning and maintenance lights illuminating on the dash. The vehicle then lost all acceleration power and shut off, leaving my wife and children stranded in the middle lane of moving traffic. All of this happened in a matter of seconds. This situation quickly became a life-threatening incident. Vehicles, including large semi-trucks, were swerving and honking to avoid colliding with our stalled Yukon. Fearing for my family’s safety, I was forced to exit the vehicle in the middle of traffic and physically push the Yukon to the side of the freeway, while trying to keep my wife and children calm inside the vehicle. The panic and distress this caused my family—especially my wife, whose anxiety skyrocketed—is beyond unacceptable. Highway law enforcement arrived and remained there until we were able to get a safety tow off the freeway and out to a service shop with GMC. Just before that, we had received our vehicle back on February 20th, 2025 after being with the GMC dealership since January 3rd, 2025, for engine replacement. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA #11653702

We purchased a new 2021 GMC Yukon Denali in July 2021.We have had continuous issues with the truck starting almost immediately after we purchased it and ending with a catastrophic engine failure despite only have ~81,000 miles on it. Even more concerning is that the engine failed while my two of my children were driving with 3 of their friends. The car seized up in the middle of a busy road while driving 55 mph. The kids had to coast to the side of a busy road where they exited the vehicle and waited for a tow truck. Despite regular oil changes and maintenance, we have experienced non-stop problems with the truck * Aug 2022 (29,470 miles): Engine wire chaffing relating to the fuel pressure sensor. Transmission slipping. * Oct 2022 (34,220 miles): “Grinding noises” related to brakes. Faulty brake sensor and brake replacement. * Nov 2022 (35,954 miles): Continued “grinding noises” * May 2023 (51,163 miles): Continued “grinding noises” which were again “shrugged off” by the dealership despite us bringing in the truck for the 3rd time related to this issue. Transmission slipping (transmission torn down, clutch assembly replaced, etc.) * Oct 2023 (62,365 miles): Continued “grinding noises” (4th time bringing the truck in for this reason). * Sep 2024 (81,000 miles): Catastrophic engine failure while driving on a busy road at 55 mph. Based on discussions with a wide range of mechanics, dealerships, shops, individuals within the automative industry, we have come to understand that the issues we have been facing with our truck are not unique. To be clear, we have experienced: i) the same problem repeatedly over a short period of time; ii) repeated unsuccessful attempts to fix the same issues; iii) a prolonged period for repairs where we did not have the vehicle; and iv) significant value loss due to catastrophic engine failure. Further, these problems compromised the safety of my family and has significantly disrupted our life.

NHTSA #11638004

I was driving with my [XXX] son and my car just stalled out in the middle of the road. I couldn’t start it and we were stuck in the middle of the road. My husband arranged for a tow and the repair shop (safe auto repair Mont Belvieu) told me that this type of thing they have seen a lot of. The fuel pump power control module needed to be repaired and they said when that happens it sometimes shorts out the fuel pump system too. They said they had to repair 4 like this already during the week. My neighbor said the exact same thing happened to her friend gmc at4 a month ago and was also driving and the car just stopped. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA #11651172