Engine And Engine Cooling Problems of GMC Yukon - part 2

Vehicle became disabled. Gm service center determined that the crankshaft failed and lifter rods bent causing total engine failure. Gm service center unable to determine cause and the engine is being replaced at a significant out of pocket cost.

See all problems of the 2023 GMC Yukon 🔎.

Vehicle started showing a po308 code. Called sewell GMC in midland where I purchased the vehical they were 2 months out on diagnostic services. So I took it to another shop. They ran a camera into the problem cylinder and for scaring on the walls. They said it was due to the afm system and the engine was unrepairable. So now I am out 17,000 dollars and stranded over 700 miles from my home due to a manufactured defect.

See all problems of the 2019 GMC Yukon 🔎.

2023 GMC Yukon xl(6. 2 liter engine). Engine has failed twice with the first incident being on the interstate and the engine seized without warning with only 38,000 miles. GMC replaced the engine and now the second engine has failed with only 80,000 miles on it. I am told there needs to be a third engine installed and the vehicle is only three years old. If an engine fails without warning this puts everyone in danger. My [xxx] son was in the car when the first engine failed. There is an obvious manufacturer's defect that needs to be addressed before innocent people are injured or killed. The vehicle is currently located at darrell waltrip GMC in franklin, tennessee. It is not drivable. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

We were driving back from vacation in a 2022 Yukon denali with less than 40,000 miles on it when our engine completely seized. We were going highway speeds in a remote area. 4 kids were in our car, one of them only 1 month old. We were stranded for 10 hours. Engine needs to be completely replaced. Gm is not providing any assistance.

See all problems of the 2022 GMC Yukon 🔎.

Driving on the freeway the engine started making super loud knocking noises for while going 70mph . Then it immediately died everything turned off no power I was barely able to get it off the freeway while coasting. And my husband tried to push it off the road more but when it dies we are not able to put the car in neutral !! it’s a push button gear shift ! when there’s no power the buttons don’t work!! it was 105 degrees out that day in sacramento , the car had zero power the battery is not the problem . The motor is blown and the car hasn’t started since that day. These cars are dangerous to just die in the middle of the freeway! the motor has already been replaced in Feb 2026, we bought it in March of 2026 with 57k miles on it. I added about 12k miles and the motor blew up again!.

See all problems of the 2021 GMC Yukon 🔎.

I’m currently on my third motor as a result of the l87 engine loss. When I bought the vehicle, I was not aware that the engine had already been replaced however, due to hearing a tick, I brought my vehicle to the dealership for the recall and was told that this is not the original engine, but they had the paperwork for this engine as well. Nonetheless, the engine “passed” their inspection. They changed my oil and replaced my cap. Within six months, I threw a rod. Not only did I have a horrible experience with the dealership, my new motor is also ticking.

While we were visiting canada, our GMC Yukon had fewer than 5,000 miles when its engine seized on the highway. The vehicle was taken to a GMC dealership in canada. The dealer advised that the engine needed to be replaced, and it has now been replaced. We need to back to canada to pick up the vehicle.

My 2021 GMC Yukon denali features the 6. 2l l87 v8 engine. This vehicle was previously serviced for the gm voluntary recall regarding engine bearing failures, and the dealership completed the remedy by inspecting the motor and changing the oil to the thicker 0w-40 specification. Since completing this recall fix, the vehicle has developed an intermittent rough idle and sputtering behavior. The dealership has been unable to duplicate the intermittent issue and claims it falls under normal behavior. I am filing this report because my vehicle is exhibiting post-recall remedy engine degradation, matching the exact failure patterns outlined in the NHTSA engineering analysis ea26005 escalated on August 20, 2026. This intermittent sputter represents a severe safety hazard regarding potential sudden loss of motive power while driving.

Driving about 75 mph car shuttered and motor quit running had to pull off of the highway and get towed to dealership. Motor had to be replaced due to 1,2,6,7 rod bearings spun on the crankshaft. 34367 miles.

See all problems of the 2024 GMC Yukon 🔎.

On July 30th 2026, I was driving on the highway at about 75 miles per hour and the engine shut down. We were fortunate that we could pull over to the side of the highway. We had the truck towed to oxendale GMC. Today 8/4/26 I was informed that in fact the engine needs to be replace. No warnings no symptoms, the truck just shut down while driving.

I was on the highway i90 and the motor failed. Had to get it towed the the nearby gm dealership.

The engine failed at 5383 miles while driving on remote highway in nebraska.

We just purchased our Yukon from a dealership in February (2/7/26) and it was diagnosed with premature failure of at least one afm valve lifter as it is causing engine misfires, shaking and stalling on 7/30/26. We just hit 67,000 miles on the odometer so we are just beyond the warranty coverage. The lifters were replaced previously by the previous owners on 12/16/24.

See all problems of the 2020 GMC Yukon 🔎.

The contact owns a 2021 GMC Yukon. The contact stated that while driving approximately 50 mph, the check engine warning light started blinking and the vehicle started shaking violently. The vehicle was pulled over to the side of the road and turned off. The vehicle was then towed to a dealer where it was diagnosed with a stuck lifter. The contact was informed that the lifters needed to be replaced. The vehicle was not repaired. The contact believed that the failure was associated with an undisclosed recall number. The manufacturer was notified of the failure. The failure mileage was approximately 100,000.

On July 28, 2026, while traveling on vacation with my family, our vehicle experienced a catastrophic engine failure. There were warning lights displayed for 30 seconds prior to the engine failure. On July 23, 2026, one day before taking the vehicle to the dealership, the following warning indicators appeared on the dashboard and then disappeared: “service esc,” “service traction control,” and a flashing engine light. We took the vehicle to the dealership on July 24, 2026, because we wanted to be proactive and ensure that the vehicle was safe to operate. The dealership inspected the vehicle but reported that no diagnostic trouble codes were identified and no issue was found. We picked the vehicle up from the dealership on the evening of July 27, 2026. On July 28, 2026, while traveling on the highway approximately 2. 5 hours from home, the same warning messages appeared on the dashboard again. Because we were traveling at highway speeds and vehicle speed management was becoming an issue, I immediately exited the highway and stopped in a parking area. I placed the vehicle in park, at which point the engine began idling extremely rough. I could feel the vehicle shaking while sitting in the driver's seat. I exited the vehicle to open the hood, but before I was able to do so, I noticed gray smoke coming from the exhaust. We located a GMC dealership approximately two miles away. Because of the vehicle's condition, we drove there slowly on the frontage road at approximately 15 mph and dropped the vehicle off for diagnostic inspection. The GMC dealership subsequently diagnosed the vehicle with catastrophic engine failure and recommended that the engine be replaced. The vehicle remains at the dealership and is available for inspection. We made a reasonable effort to have the vehicle inspected before our trip because we were concerned about the warning indicators and wanted to ensure that the vehicle was safe to travel.

Driving on highway, engine stopped while driving 70+ mph. Had to get to the side of the multilane highway. Was towed to nearest GMC dealership. Dealer said the engine was locked up, and they have many vehicles right now with similar problems. They will have to replace the engine due to complete engine failure.

Second engine sized at 87,834 miles. Third engine installed three weeks later.

My Yukon denali ultimate had only 3,788 miles on it and on 7/27 while merging onto a highway my vehicle made a sound like it was trying to shift into gear but couldn't and then while I'm pressing the accelerator pedal it's slowing down. There were tractor trailer and vehicles speeding up behind me but I couldn't speed up and I was able to pull over on the shoulder luckily and I'm thankful it did not cause an accident. My Yukon would not start no matter what I tried and I ended calling a tow truck and had it towed to my local GMC delearship where I was informed that the engine had seized and they would order a new replacement engine. My Yukon is still sitting at the dealership waiting for the repair.

The contact owns a 2026 GMC Yukon. The contact stated that while driving 55 mph and depressing the accelerator pedal, the vehicle failed to respond as intended. The contact pulled over to the side of the road, turned off and restarted the vehicle; however, the failure persisted. A dealer was contacted. The vehicle was towed to the dealer to be diagnosed, and the contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that there was a wait for the replacement engine. The approximate failure mileage was 3,788.

We took in our Yukon for the recall letters we’ve received in the mail and to check a suspension light the popped up. Our Yukon was given back to us with the ac not working properly anymore and it started to turn off on us out of nowhere. Now we need an engine replacement. What’s more aggravating is that the Yukon was checked out the week of july27 -31 according to service advisor the engine was good and the only thing needing to be replaced was the module for the suspension light that popped up. Now it turns out that it doesn’t even need a module replacement and the suspension issue is something else. Super frustrating it’s our only family vehicle and it so upsetting that we were given the Yukon back in the condition it was in. Thank goodness the Yukon shut off at a drive thru and not a freeway or my husband would’ve got into an accident.

My vehicle is making a knocking sound and has the l87 6. 2 v8 engine that is under recall for catastrophic failure. It has been evaluated by 2 mechanics that say it needs a new engine. Yes it is available for inspection upon request. Although it has not shutdown yet, both mechanics have said it is eventually going to be a catastrophic failure. My safety and families safety is at risk of it shuts down and causes an accident. There is no warning light currently displayed.

While traveling on [xxx] from houston back to san antonio, my truck engine just blew up without any warning whatsoever. We purchased the truck with 3 miles on it, and we have only put 5,000 miles on it. New cars that cost early $100k shouldn’t be having engine failures like this. I’m lost for words now! information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

While traveling at highway speeds, my 2017 GMC Yukon sle suffered a sudden, catastrophic active fuel management (afm) valvetrain lifter and camshaft collapse. This caused an immediate and highly dangerous loss of vehicle propulsion in live moving traffic on I-95, creating an extreme physical safety hazard for my family. General motors has extensive, documented internal corporate knowledge of this severe design defect under technical service bulletin TSB #18-na-073.

See all problems of the 2017 GMC Yukon 🔎.

GMC should be haulted from selling trucks with the 6. 2l engine. My brand new 2026 GMC Yukon denali engine imploded on the interstate going 75mph that nearly killed my entire family. No warning, just out of no where died on the highway, with 4k miles on it. This is sadly going to get someone critically injured and when is enough going to be enough? GMC has some explaining to do, when they charge $85k-$100k for trucks that blow up as soon as you buy them.

Unknown brought my car in on July 24, 2026. They reported they do not know what is wrong with the engine, but stated gm is not letting them take it apart and told them to replace the engine. While the car was parked and during acceleration, my car was making a weird noise that got louder during acceleration. A few days prior to this happening, while driving on the highway, my car's emergency lights came on. I had to pull over to turn it off.

The engine tries to die when in park. While stopped at a red light, it died and stated conditions not met to shift. Had to hit park button then restart it. This has happened 4 times. With & without auto start feature on.

While driving down [xxx] in [xxx] engine had a major failure causing the loss of power and control of the vehicle going interstate speed. Luckily no accidents and no injuries or fatalities. All the these vehicles using the 6. 2l engines made by gm should be bought back by gm at full purchase price. A few months ago my vehicle underwent the recall procedure and passed. So the recall process is incomplete and shows no real problem solving procedures, these vehicles are a ticking time bomb to all the owners and fellow motorists. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

2023 Yukon xl at4 with 67k miles suddenly had lifters fail. Gm service said cam scored & metal debris all the way through to the pan, requiring total engine replacement. Vehicle was very well maintained with premium fluids and parts.

Engine seized while driving on the highway. This is the same engine that is being recalled and gm has said that the VIN is not covered. The vehicle stopped running on a major highway with my [xxx] old son in the car. The dealership is saying this is the exact issue that is part of the larger investigation for gm v8 engines. There were no warning lights at all prior to the engine seizing. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

This vehicle has been towed into GMC service 3 times to date. #1. 2/2024 (mil 22,662) would not start, low voltage msg, replaced battery. #2. 4/2026 (mil 57,854) vehicle went into n on its own while I was driving down the road, msg on dash "function not available", I stopped and the engine died & would not restart, no engagement from starter motor, found p0615 present, found blown fuse on battery distribution fuse block, replaced. #3. 7/2026 (mil 63,041) vehicle went into n on its own while I was driving down interstate, msg on dash "function not available", I stopped, the engine died and would not restart, found main battery fuse blown, engine seized, found spun rod bearing full of metal debris, replaced engine, radiator, cooler lines, seals, gaskets, bolts, & fluids. My safety was at risk as I was driving down a highway and the interstate 2 of the times the vehicle put itself in n. The problem has been confirmed by the dealer. The vehicle has been inspected by the dealer's service dept. Prior to these incidents I did not notice any symptoms that would have alerted me of what was to come. **this report is referring to my latest incident which was engine seizure. Recalls have been performed, #1. 5/2025 "reprogrammed serial data module" & #2. 11/2025 "engine loss of propulsion recall", replaced oil with 0w-40 & "ecm software update recall", replaced ecm with sps.

Engine blew at 8,762 miles in the middle of the night with 3 small kids in the car. Currently 41 days waiting for a new engine. We were driving and it started making a clapping sound like something was caught underneath. We had to drive a could miles to find a safe place to pull over. If we increased speed, the clapping increased and it slowed when we slowed. Hauled it to the local dealership and they said it was the engine. The dealership it was purchased at says the same thing. There was no warning. After a couple of miles of the clicking/clamping sound, the car started to shake and then died. There were no warnings or light on the dash of any signs of distress until it died. It was a couple of miles before we even had a safe place to pull over on the side of the highway. Going 70mph on a highway that is posted to be 70mph with 3 kids in the car, in the middle of the night, put my family’s life in danger along with other cars behind us. Clearly safety and quality isn’t gm’s top priority. This is our 5th Yukon. Our 13th general motors vehicle. To say we are disappointed is an understatement when we have been devoted to gm for over a decade.

The engine in my 2022 GMC Yukon xl equipped with the 6. 2l l87 v8 experienced a sudden loss of power while traveling at interstate speed. The vehicle had previously received the gm l87 engine recall remedy. Despite the recall being completed, the engine failed, leaving me and my family in a dangerous situation. The vehicle is currently at a GMC dealership and is available for inspection upon request. The sudden loss of engine power on a busy interstate created an immediate safety hazard. Traffic was traveling at highway speeds, and the vehicle rapidly lost the ability to maintain speed, increasing the risk of being struck from behind or being involved in a serious collision. My family was in the vehicle at the time, making the incident especially concerning. The GMC dealership has confirmed that the engine failure is related to the l87 engine issue and advised that the repairs will be covered under the applicable warranty/recall-related coverage. Additionally, after the original recall service was performed, an expanded recall was added to my VIN, further indicating that the original remedy may not have fully addressed the underlying defect. The vehicle is currently being inspected by the authorized GMC dealership. Prior to the engine failure, there were no warning signs indicating an imminent catastrophic failure. The recall service had already been completed, leading me to believe the vehicle was safe to operate. The engine nevertheless failed after the recall remedy, raising concerns that the corrective action may not be sufficient to prevent future failures.

Am filing a formal complaint regarding my 2023 GMC Yukon denali, which experienced a catastrophic engine failure while I was driving on the highway with my family. The sudden failure created a dangerous situation, placing both my family and me at significant risk. As a result of the breakdown, I was forced to pay $260 out of pocket to have the vehicle towed to the dealership. After inspecting the vehicle, the dealership advised me that the engine requires complete replacement. There was no indication that the engine was going to go. Thankfully there was a shoulder on the highway and we were able to pull over. This could have caused an accident could've been fatal.

The contact owns a 2024 GMC Yukon xl. The contact stated that upon taking the vehicle to the dealer to be repaired under NHTSA campaign number: 25v274000 (engine and engine cooling), the contact was informed that the vehicle passed the inspection and no repair was needed. However, the vehicle experienced engine failure approximately seven months later. While driving 50 mph, the vehicle lost motive power. There was no warning light illuminated. The driver pulled over, restarted the vehicle, and resumed normal driving. The vehicle was taken to the dealer the following morning, where the electronic control module was replaced under warranty; however, the failure recurred while driving 70 mph three weeks later. No warning light was illuminated. The driver pulled over, restarted the vehicle, and resumed driving; however, the vehicle failed to exceed 40 mph and shut off. The vehicle failed to restart and was towed to the dealer, where it was diagnosed and determined that the engine, radiator and seal kit needed to be replaced. The vehicle was not yet repaired. The contact was concerned that the recall remedy failed to prevent the failure. The manufacturer was notified of the failure and a buyback was requested, but the request was denied, and the contact was referred to the dealer for additional assistance. The failure mileage was approximately 27,800.

While driving about 70 mph in the express lanes, the vehicle suddenly lost power and drifted like it went into neutral. There were no warning symbols. The vehicle could not restart even while coasting. After stopping, it locked itself in park and would not shift out of park. My family and I were trapped on the express lanes for over an hour in a dangerous location. The vehicle stayed stuck in park even on the tow truck. The dealer confirmed metal in the oil filter, a blown main fuse, and knocking when starting. The recall inspection and remedy were already done, but the failure still happened. The vehicle is undriveable and the required recall repair cannot be completed because the replacement engine is on backorder with no eta.