Power Train Problems of GMC Yukon - part 2

The contact owns a 2008 GMC Yukon. The contact stated that while driving at an undisclosed speed, the transmission shifted from first gear to second gear and the vehicle intermittently stalled. The contact shifted to park and restarted the vehicle, and the vehicle was shifted into drive and returned to normal operation. The failure reoccurred on several occasions. The vehicle was taken to several independent mechanics; however, the diagnostic result was unknown. The manufacturer was not notified of the failure. The failure mileage was unknown.

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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.

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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.

The contact owns a 2020 GMC Yukon. The contact stated that while driving at various speeds, the vehicle jerked and the transmission malfunctioned, causing the wheels to lock up and the check engine warning light to illuminate. The vehicle was driven to a local dealer who diagnosed that the transmission clutch and pressure control solenoid had failed. The contact was advised that the transmission needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was offered. The contact was informed that the VIN was not included in NHTSA campaign number: 26v289000 (power train). The contact stated that the vehicle experienced the same failure listed in the recall. The failure mileage was 118,000.

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The contact owns a 2016 GMC Yukon. The contact stated that while the vehicle was at the inspection station for an inspection, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The contact stated that the transmission had seized, and the vehicle failed to move. In addition, the check engine warning light was illuminated. The contact stated that the failure had occurred immediately after an unknown device was attached to the vehicle while being inspected. The contact informed the inspector of the failure. The contact was advised to contact the NHTSA hotline to report the failure. The dealer was not made aware of the failure. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was not made aware of the failure. The failure mileage was 119,637.

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The contact owns a 2020 GMC Yukon. The contact stated that while depressing the accelerator pedal, there was an abnormal popping sound coming from the engine compartment, and the vehicle hesitated while accelerating. The cause of the failure was not yet determined. The manufacturer was notified of the failure, but no assistance was provided. The local dealer had not yet contacted. The failure mileage was 44,000.

My family and were traveling to visit family, and the transmission stalled on me on the interstate. I almost had a horrible accident with my kids in the vehicle. The vehicle is in the shop currently and dx with transmission issues. GMC needs to recall and or fix the transmissions in all of their vehicle.

See all problems of the 2021 GMC Yukon 🔎.

Gm performed a vehicle wide over the air reprogramming of the modules incorporated in the vip/global b electronics platform in April, 2026. Following that my vehicle became totally dead. Key fob would not unlock the vehicle. Had to use the metal key, open the drivers door. Opened the door, nothing moved. No lights, no movement from anything on the vehicle. Opened the hood, charged the battery and tried to crank it. Would not budge. Starter would not engage. Disconnected the negative battery cable. Tried again. Still would not budge. After an hour of so of trying and using jumper cables from our other vehicle, still would not budge. I disconnected the negative battery cable from the right front fender ground and reattached it. It then cranked. Drove the vehicle 30 miles at interstate speed. 8 miles in city traffic. Drove home and parked it in the garage. Drove it abput 10-12 days later to get breakfast. Parked it, locked it with the key fob. Came back after getting food, key fob would not work. Opened it with the button on the door handle. Got in tried to crank it. Would not budge. Disconnected the negative battery cable twice, before it cranked, but would not drive. Message in dash said vehicle could not be driven. Finally got it cranked. Gm never advised that the battery must have a 70% charge at all times for the electronics to work. Owner's manual contains no such statement. Vehicle is defective to the extent that it will leave me stranded in wherever the battery power is less than 70%. Dangerous to get stranded at night on a lonely road or highway, away from cities with tow trucks and competent service personnel. Vehicle in shop 32 days before dealer advised resolution. Modules bricked requiring engine control module and telematics module replacement.

See all problems of the 2025 GMC Yukon 🔎.

On June 25, 2026 my 2023 GMC Yukon denali with 53,456 miles was brought to an authorized GMC dealership after displaying a service 4wd warning light and exhibiting a groaning noise when shifting into drive and reverse. The vehicle was diagnosed with the following brake system fault codes: p25a2, c0511, c0517, c1595 and c1596. These codes indicate brake control module failure and wheel speed sensor faults which are safety critical components. The dealership confirmed these findings but stated the repairs are not covered under the GMC powertrain warranty. Given that these are safety critical brake system failures on a nearly new vehicle with only 53,456 miles, we contacted GMC customer care on July 1, 2026 to request coverage under goodwill warranty as we believe these failures constitute a manufacturing defect. A case was opened however after 7 days no case advisor has been assigned and no decision has been made despite two promised timelines not being met. The brake system failures on a nearly new vehicle represent a serious safety concern as these systems directly affect the vehicle's ability to stop safely. The vehicle has been at the dealership since June 25, 2026 and remains unrepaired.

Complete transmission failure at 82,000 miles. Well maintained vehicle, not used for towing or heavy hauling. Required complete replacement. Traveling at highway speeds and-according to repair facility- valve failure caused transmission to overheat a stripped gears, causing complete failure. Vehicle was unable to shift into any gears and was left inoperable. Required towing assistance and replacement.

Vehicle lost all power and shutdown coming off the highway. This all happened even after the heavier ow-40 oil was added from the initial engine inspection. Been waiting almost 2 months for a total engine replacement.

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Transmission abruptly failed after only 110k well maintained miles.

I was driving home on the interstate from vacation and I was set on cruise control it was 1 am so not a lot of traffic was on the road thank god. It could have been really terrible if lots of traffic was present as the engine just died without notice! the vehicle was decelerating nothing was working I could not speed up. I was able to get over to the side of the road. I got a notification on my phone that said battery critically low start vehicle to charge battery. Well nothing would start at this point. I lot all power seconds later. I thought that the cruise control was locked up and restarting it would reset it. I called roadside assistance to get a jump and that did not work. I got towed into an auto repair shop. They called me and told me that the engine is locked up that they drained the oil and found metal in it and metal pieces in the oil filter as well. They checked for leaks and said there was none that they could find. They said there was a recall but it was for the exact same symptoms that was diagnosed here but only starting with year 2021. Mine is a 2019 Yukon denali with low mileage so not sure if all the other Yukons were aged out or already past engine death and that’s why they were not part of this but this should be included in with the open recall considering how everything is the same that is effecting this year that I have and they should pay for a new engine! clearly the v8 6. 2 GMC engines are having major issues I’m just glad I wasn’t going that fast and traffic was slow so I was able to get over safely before catastrophic things happened since there was no warning when this all happened!.

See all problems of the 2019 GMC Yukon 🔎.

With no warning, my engine 6. 2 l stopped running at highway speeds and failed to restart. The power train completely failed for a second time after having a previous engine replaced for the same failure in 2024. I had the car inspected per the recall along with changes in the oil viscosity as recommended along with service inspection. The car left me stranded again on rural highway for over 5 hours in temps that exceeded 98 degrees. The car would not start and went into a power save shutdown and had to be towed to the dealer. I was fortunate to have avoided any traffic on the highway enough to get the car off the road. This is not safe to drive on the highway and GMC has known defect and safety concern with this issue.

Vehicle had previously undergone the gm 6. 2l engine recall inspection on October 17, 2025, and was determined to have passed. On June 13, 2026, at approximately 80,390 miles, the vehicle suddenly lost propulsion while being driven with five children in the vehicle. The vehicle became inoperable and required towing. Dealer subsequently diagnosed engine failure and has ordered a replacement engine. This failure happened with out warning.

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.

See all problems of the 2024 GMC Yukon 🔎.

My 2023 GMC Yukon denali xl, used as a commercial vehicle for my business, experienced sudden and complete engine failure at approximately 70,000 miles with no prior warning. No check engine light, no unusual noise, and no other symptoms. The vehicle had previously been inspected/serviced under gm safety recall 25v-274 (l87 engine loss of propulsion) and had been deemed safe prior to this failure. The failure occurred while driving on a two-lane road in durango, CO. The vehicle lost all propulsion and came to a stop in the roadway, blocking the lane of travel and forcing other vehicles to cross into the oncoming traffic lane to go around the disabled vehicle. This created a serious and immediate hazard to myself and to oncoming traffic. The vehicle was not driveable and had to be towed. The dealer confirmed catastrophic engine failure requiring a complete engine replacement. After the engine replacement, the morehart murphy GMC dealership in durango also failed to properly recalibrate vehicle sensors. They did not reinstall certain suspension components that had been removed for the engine replacement, requiring multiple additional dealership visits to resolve along with recalibration of the air ride suspension. After the replacement I was getting messages that the vehicle was "too low to drive with caution" and "reduced acceleration drive with care. " this vehicle failure occurred during our peak season (June 10-July 2). The vehicle being out of service, I was required to rent a replacement vehicle at my own expense because gm did not provide a loaner vehicle. I estimate loss revenue at $1k/day. When I attempted to raise this issue with gm directly, their response was to submit letter to a p. O. Box, with no other means of resolution or contact offered. Given that this vehicle had already undergone the recall remedy and was represented as safe, this incident is relevant to NHTSA's ongoing investigation into post-recall l87 engine failures (recall query rq26001).

Issue description: the vehicle experienced a failure of the dynamic fuel management (dfm) system, resulting in a collapsed lifter. This caused a cylinder misfire and a sudden loss of engine power while driving at highway speeds. Safety concern: while traveling at highway speeds, the sudden misfire and loss of power created a dangerous condition. The vehicle could not maintain speed or accelerate properly with surrounding traffic, significantly increasing the risk of a collision. Failure details: the issue was diagnosed as a collapsed lifter related to the dfm system. This caused persistent misfiring, rough engine operation, and severe drivability issues. Repair outcome: due to the extent of internal engine damage caused by the lifter failure, the vehicle required complete engine replacement.

The contact owns a 2021 GMC Yukon. The contact stated that while driving approximately 50-60 mph, the vehicle was shuddering abnormally. The message "restraint safety system" was displayed, and the air bag warning light was illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA hotline. The failure mileage was approximately 138,000.

Engine overheated and performed an emergency shutdown while driving through atlanta on my way to vacation with my family. We lost propulsion and had to cross 5 lanes of traffic to find a shoulder to pull over to. The engine shut down and we were left stranded 500 miles from home with our 3 children in a boiling car. The vehicle was inspected and passed the recall test 6 weeks prior to this incident. After the first failure we attempted to extend our power train warranty to which we were told it had too many miles by gm. The gm dealership and service center where the vehicle was towed confirmed the engine needed to be replaced and gm confirmed it falls under their extended warranty. However, gm refuses to cover any additional expenses incurred from their engine failure.

Took car in to have it checked for recall on engine and have oil changed to new standards with wd40 was told the engine and car was fine “just use this new oil” a month later was driving and engine would not shift come to find out our transmission was going out it was replaced thanks to our extended warranty (even tho it only had 98,000 miles on it) a week after a fuel pump was out and we had to pay to replace it. There were never check engine signs and no signs of the car having failure truly it ran great until the new oil.

The contact owns a 2015 GMC Yukon. The contact stated that while driving at 35 mph to work, the vehicle shifted into neutral and into low and failed to drive at about 20 mph. The check engine light was flashing. The front collision was unavailable. The contact left the vehicle at a gas station. Upon research, the contact located NHTSA campaign number: 14v374000 (power train), which was similar to the failure. The local dealer was contacted, who confirmed there were no open recalls. The vehicle was not diagnosed or repaired. The manufacturer was contacted via chat, who referred her to the local dealer and manufacturer service center. The contact informed her to confirm the coverage with the dealer. The failure mileage was approximately 283,000.

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1. Xxx xx— gm recall notification (recall no. N252494000) I received official notification from general motors of recall n252494000 affecting my vehicle. I brought the vehicle to [xxx] as directed to have the recall remedy performed. 2. Xxx — first report of engine propulsion issues I reported engine propulsion concerns to jim ellis. This was my first formal complaint regarding the performance of the vehicle following the recall remedy. 3. Xxx — oil type change performed by jim ellis jim ellis performed an engine oil type change, switching to 0w-40 oil, and advised me that this change would serve as the fix for recall n252494000. I accepted this remedy in good faith. 4. Xxx — low oil warning light activated approximately nine months after the recall remedy, and well before the end of the recommended oil life cycle, the low oil warning light activated on my dashboard. This is abnormal and indicative of excessive oil consumption. I returned to jim ellis, who performed a fresh oil change and placed my vehicle on a 6,000-mile oil consumption test — an acknowledgment that an oil consumption problem exists. 5. Xxx — active engine misfires, jerking, and flashing check engine light while operating my vehicle on Sunday, may 31, 2026, I experienced severe engine jerking and misfires. The check engine light began flashing — not steady — which I understand to indicate an active and serious engine misfire event. I was genuinely concerned for my personal safety and immediately parked the vehicle. It has not been driven since. 6. Xxx — gm corporate case opened I contacted gm customer care and was assigned corporate case number information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The contact owns a 2021 GMC Yukon. The contact stated that while driving at an undisclosed speed, the vehicle would independently activate limp mode and would not accelerate past 30 mph. In addition, the vehicle would not shift into the reverse gear as intended. The vehicle was taken to a local dealer, where it was diagnosed with error codes: p0777 and p18a1. The vehicle was not repaired due to parts being on backorder. Upon further investigation, the contact related the failure to an unknown NHTSA campaign; however, the VIN was not included. The manufacturer was made aware of the failure. The failure mileage was approximately 90,000.

Transfer case locked up at highway speeds. Had to be towed to dealer not drivable. Locking up rear tires at highways speed was serious risk. It was inspected and found not to be covered under current recall even though exact same thing happed to recalled vehicles. No warning lights or messages.

The contact owns a 2021 GMC Yukon. The contact stated that after restarted the engine and the vehicle did not operate in reverse. During the failure no warning messages had displayed. The vehicle was driven to the local diagnosed that the transmissions needed to be replaced. The manufacturer was notified of the failure, but no assistance was offered. The contact was informed that the VIN was not included in the NHTSA campaign number: 24v797000(power train). The contact indicated that the vehicle had experienced that same failure listed in the recall. The failure mileage was 70,000.

Without any indications of a problem our transmission began making a loud whining noise. The evening before it was fine and the next morning on startup the noise just began. The vehicle only has 45,000 miles on it and the transmission had been serviced at the recommend manufacturer interval. Took it immediately to my auto repair shop where it was diagnosed as a transmission failure (they has seen this before) and told not to drive until replaced due to safety issues related to the failure. Unfortunately, due to a shortage of these needed 10 speed transmission I waited over a month for the vehicle to be repaired. The shop contacted gm to inquire about any warranty help but was told there was none.

My engine with less than 5,000 miles died (engine was blown). While driving on highway engine died and wheels locked and almost caused a major accident. I had to get a tow and bill cost me 700. 00. GMC is giving me the run around. Dealer stated that engine will need to be replaced. GMC is doing nothing to assist me, I have a car note with no truck GMC is the biggest scam.

Transmission has been replaced, still having same problems. Actuator was fixed within the transfer case. Still shaking. Was driven by dealer and told to check again after changing into summer tires. Changed into summer tires and still having issues if not worse. Separately; the power running boards have never worked - been told its wiring issue. Wiring issue is a concern for fire safety.

6. 2 liter engine seized on the interstate, I lost propulsion as the car switched to neural on it's own. Auto was towed to applegate Chevrolet in flint, mi.

Driving the vehicle with my family in it on merrit parkway in CT 230 am on may 10 th car rpm start going up and making noises and felt like gear not shifting in few seconds later car all sudden on its own shifted to neutral as my speed 55-60 mph was during that moment. And screen on dash went blank dark . I was able to move to side of the road safe as possible . Road is only two lane and no room to park on side . Immediately turn hazards lights on and try to restart the car and vehicle will not turn on . State troopers came and assisted us till tow truck came and vehicle get towed to dealer.

On may 8th of 2026 my 2023 GMC Yukon with approximately 42,900 miles experienced an complete failure of the 6. 2l engine requiring replacement. The engine failure occurred despite the engine having recently undergone inspection and special oil being used related to NHTSA 25v274 / gm n252494000 recall. When the engine failed, the vehicle could not be towed or pushed out of the flow of traffic because the computer will not allow the vehicle to be shifted into neutral, only showing "conditions not correct for shift" in the instrument cluster. This sudden and unexpected loss of engine power combined with the inability to remove the vehicle from the lane of traffic creates a dangerous situation.

The vehicle keep jerking in and out of gear the issue almost made me crash due to the harsh conditions took to repair they stated this is a known problem. That is what worries me now.

See all problems of the 2018 GMC Yukon 🔎.

For the third time, my vehicle died on me while I was driving; 2 of those times were on the highway going highway speeds. The last (3rd) time, I was towing my travel trailer/RV on the highway. In all incidents, the engine stopped propelling the vehicle. I could see and hear the engine revving but I failed to accelerate. After various warnings on the dash, I was able to pull safely off the road and then the engine just stopped, and nothing else worked. It failed to restart. This could have been a potentially dangerous situation because had I not been able to safely pull over, I would have been rear-ended. My vehicle was not part of the l87 recall for the 6. 2l gm engines but the symptoms sound the same as those that were. The recall probably should have been expanded beyond the dates that gm originally included.

The contact owns a 2021 GMC Yukon. The contact stated that while driving at undisclosed speeds, the transmission was shifting hard, with severe vibrations and shuddering. The vehicle was taken to the local mechanic, who confirmed the failure and advised the contact to take the vehicle to the local dealer. The vehicle was taken to the local dealer, and the failure was confirmed, but the vehicle was not repaired. The contact stated that the vehicle was previously serviced under NHTSA campaign number: 24v797000 (power train); however, the failure occurred. The manufacturer was notified of the failure, but no assistance was offered. The contact stated that the manufacturer had issued a special coverage associated with the failure but offered no assistance. There was no fault code retrieved associated with the previous software update that was performed under the recall campaign. The failure mileage was 78,000.