Electrical System Problems of GMC Yukon - part 2

Onstar telemetry module failed. Needs replaced. These modules are on back order. Safety features and emergency calling are disabled due to failed telemetry modules. Over the air updates cannot be completed due to the failure of the telemetry system. Important module updates from the manufacturer are not happening.

See all problems of the 2022 GMC Yukon 🔎.

When turning on the car, a message pops up on the dash and will not go away. Dashboard says “ service safety restraint system”.

See all problems of the 2021 GMC Yukon 🔎.

First incident April 9 2024 not even a month after purchased. Vehicle dashboard lit up light a christmas tree all warning lights while driving on highway. Vehicle shook and sputtered and turned off. The vehicle was serviced explanation given was loose spark plugs on a new vehicle. 2nd incident roughly month after recall repair for engine propulsion campaign. February 26 and 27 2026 . While driving the following lights came on engine failure ,brake failure , service transmission now unable to shift soon. I was terrified because I could not control the vehicle. I had the vehicle towed to the dealership. The answer to the issues was battery failure. Third incident April 17th 2026 I driving on highway 70 miles check engine light comes on flashes dashboard goes dark. Vechicle sputters and shut down. I restarted the vehicle the warning on the display disappeared and the vehicle restarted. I reached returned the vehicle again to the dealership because the problem resumed slowing down even though I’m depressing the gas. Vehicle is shifting and dragging. Resulting unexpected lurching. My vehicle has been at the dealership since end of April 2026 it remains there currently. My representative stated a code indicating misfiring has appeared 18 times. Also everyday my vehicle keeps saying software update even I installed the update and it says complete. I know gm is not updating my vehicle software everyday. That indicates there is a computer issue as well. My anxiety level is through the roof at this point. I complained before about this same failures in a Cadillac escalade prior to it lurching forward and crashing. I filed a complaint before February 2024 . There is something really wrong with gm engines and software. I know I’m not the only one experiencing these problems.

See all problems of the 2024 GMC Yukon 🔎.

The contact owns a 2019 GMC Yukon xl. The contact stated that on several occasions while stopped and attempting to accelerate, the vehicle reversed inadvertently and then jerked forward to accelerate. The contact added that the battery was drained but the failure was not the most important to report at this time. The vehicle was taken to a dealer where it was diagnosed that the starter needed to be replaced. The issue reoccurred the same day. The vehicle was taken to the same dealer where it was diagnosed that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 135,000.

See all problems of the 2019 GMC Yukon 🔎.

The back hatch would not open while the car was on and in park. Upon reaching in without being in the car, we turned it off, and it engaged reverse on its own, causing it to reverse immediately almost causing terminal harm to myself and my family. It careened into the woods with us unable to stop it due to the immediate speed. No one was in the vehicle, it was solely self propelled. We have a video of the path it took and the damage it caused. When the car wrecked, even when turned off, the lights and windshields wipers engaged by themselves.

See all problems of the 2018 GMC Yukon 🔎.

Ok so my first issues were with the vehicle stalling while driving in gear. Happened a few times intersections off-ramps etc…and the car would roll to a stop. Luckily no one killed. Again happened a few times. Went to dealer they “fixed”it. Then it happened a couple other times…scary shit…went to dealer then they“fixed” it again. Happened again I didnt bring it back. By this point I was carrying a 10 millimeter wrench in the glovebox to disconnect the battery so the body computer would reset. Car would start after cycling the power from the battery terminal. And those were my electrical problems …as far as mechanical problems I brought car in for the recall notice “ the pico test’ . Went for the recall oil change /test/per the recommendations. 300 miles later car engine failure at 70 miles an hour on route [xxx] south wife driving. She started crying doesn’t want anything to do with this car. Too many incidents… safety of my family at risk. Please help. Fyi I am a mechanic / car electrician [xxx] so could probably be much more descriptive if need be tow trucks ubers rental cars etc… shit show. Engine died April 16 so car has been at a dealer in [xxx] for 31days. I have dealer receipts and some play by play video of a few of the incidents information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2023 GMC Yukon 🔎.

We were driving on 95s when the Yukon denali automatically shifted itself from d to n. On the dash it had a warning message to press start again. When my husband did that we could smell a smoke smell. Meanwhile, we are in the middle lane of the highway while trying to safely get off the middle of the interstate without being rear ended by the semi that was behind us. We finally made it to the side of the interstate where my husband was able to put the Yukon in park. He was never able to get the vehicle back in drive. The car would never click back over to start up again. We had to have the vehicle towed to the nearest GMC dealership where it has now been for almost 3 weeks with no timeline for a date of a new engine. I was told it needed a new engine and radiator. Said the alternator was trying to catch fire when he was trying to start the vehicle. This is the second time the Yukon has been in the dealership in 4 months for this recall issue. This time it is 2hrs away from my home.

March 29th 2026 my 2021 Yukon xl engine stalled while driving at 45mph (no prior warning lamps or messages, restart engine came on dash) causing me to immediately pull over and come to a stop still in traffic, it shifted my vehicle into park, I was in an in an un-safe spot and was stuck in park (conditions not correct for shift on dash) because my vehicle would not allow me to shift to neutral and push it to the side of the road, (could not jump start) had towed to dealership and mentioned engine failure and fuel pump control module recalls but according to them it was a starter issue, I asked them to still check the fuel pump control module regardless. Picked up vehicle and a week later April 14th the exact same thing happened vehicle stalled while driving dash said restart engine while coasting (no prior warning lamps or messages) forcing me to pull over where it rolled to a stop and locked itself into park leaving me in unsafe conditions again. Had towed back to the same dealership and waiting to hear back from them.

**incident / vehicle info:** - **year / make / model:** 2026 / GMC / Yukon (elevation) - **date incident began:** ~mid-March 2026 - **odometer / mileage:** under 1,000 - **component:** back over prevention: rearview camera (and/or electrical system / visibility) - **crash? fire? injuries? deaths?** no / no / no / no - **vehicle still owned:** yes - **dealer or manufacturer contacted?** yes — servicing dealer rick hendrick city Chevrolet (charlotte); gm customer care cases 101763052 and 102071761 - **description (paste this — ~1,700 characters, under the ~2,000 limit):** my 2026 GMC Yukon elevation experiences intermittent total failure of the center infotainment/display screen, beginning around mid-March 2026. The failure is heat-related and intermittent: the screen functions on cool days, and on hot days it fails the vast majority of the time, unpredictably, after the vehicle heat-soaks in the sun. When it fails, the entire screen goes dark and I lose the backup camera and surround-view cameras, all hvac/climate controls, audio, navigation, and most secondary controls. Steering, brakes, and engine are unaffected. This creates two safety hazards. First, loss of the rearview camera image eliminates rear visibility when backing — the exact risk fmvss 111 is intended to prevent — raising the chance of a backover crash. Second, loss of all climate control in extreme heat endangers occupants in north carolina summer temperatures, and a blank, unresponsive screen is a driver distraction. Here's everything in copy-paste form for the NHTSA complaint. *:** 1gks2bkd1tr227930 **incident / vehicle info:** - **year / make / model:** 2026 / GMC / Yukon (elevation) - **date incident began:** ~mid-March 2026 - **odometer / mileage:** under 1,000 - **component:** back over prevention: rearview camera (and/or electrical system / visibility) - **crash? fire? injuries? deaths?** no / no / no / no - **vehicle still owned:** yes - **dealer or manufacturer contacted?** yes —.

The brake system control module, engine control module, and vehicle stability control system have repeatedly failed across 24 months and 9 repair attempts at two authorized GMC dealerships in tennessee. As of March 17, 2026 the vehicle has 27 active diagnostic fault codes including u160f and u1610 (brake system control module lost communication on both can buses), u1611 (engine control module lost communication), and c2a0a (vehicle stability control disabling inhibited). All components are available for inspection at beaman GMC in antioch, tennessee where the vehicle currently remains in an undrivable condition. Safety risk: vehicle has stalled on the highway with my family including young children in the car. Brakes have randomly engaged over 100 times with nothing around and also failed to engage when needed. Stability control is disabled. These are active safety failures confirmed by GMC's own diagnostic scans. The problems have been confirmed by both darrell waltrip GMC and beaman GMC across 9 visits. GMC's own technical assistance center (case xxx) was involved and could not resolve the defects. The vehicle was returned with more active codes than at drop-off after 57 consecutive days in GMC custody. Two unresolved GMC safety recalls are open on this vehicle — l87 engine loss of propulsion (n252494003) and brake fluid leak detection failure — directly related to the reported defects. Warning codes have been present and documented since October 2023 beginning at 1,381 miles. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The heated seats in my 2007 GMC Yukon denali caught fire to my car . The fur department came and the fire marshal came out and wrote a report stating it was from the heated seats what caused the fire when I need to I will abtain the report for the fire marshal I'm so glad my son and I were not in the car.

See all problems of the 2007 GMC Yukon 🔎.

From the time I got my 2024 Yukon denali I have had problems with the electrical systems not working, it was in the shop for 2 months upon delivery to me when it was brand new, and since then I have had issues with the engine racing, the start button not working, or cutting off and on , on its own, recently the motor cuts on but never turns over. It has been in the shop again for over a week now and they replaced the engine control module and it is still doing the same thing. The dealership is now telling me its a wiring issue causing it. It has been something the entire time I have owned it. I paid 90k for a vehicle that has major issues. I am looking into the lemon law in my state of nc, and filing a complaint with GMC to see if I can get a replacement vehicle or traded.

Vehicle could not detect key fob, key fob had normal operation(lock, unlock, remote start, tailgate open and close, all functional) but unable to start vehicle or power vehicle accessories. Windows opened with key fob and could not close windows, could not put vehicle in neutral, was stranded for 6 hours, unable to scan vehicle due to lack of key detection not allowing accessories to operate to attain connection with modules, unable to tow because couldn’t get vehicle in neutral. Vehicle battery good, key fob battery good. Was stuck with vehicle because couldn’t not close windows. Very unsafe and inconvenient situation.

On 3/14/26, on I-75 in troy, michigan at 70mph the vehicle, with 4000k miles on the odometer completely shut off. I pushed to restart the engine and it would not restart. My whole family was in the car and we were on a curve. I was able to coast to a flat shoulder. The vehicle would not restart or shift out of park. Onstar took seven hours to tow the vehicle. The dealer is installing a new l87 6. 2l engine. I do not have the vehicle back yet. I received an economy car as a loaner. The dealer says gm will not extend the factory warranty despite the engine replacement. My family could have been easily killed.

I own a 2023 GMC Yukon denali. In Nov. 2023, at about 4,000 miles, the vehicle suffered a complete engine and electrical failure at highway speed while I was traveling with my husband and three small children. It suddenly lost all power in the fast lane, including acceleration and engine function. Steering became extremely heavy, consistent with loss of power steering assist, and the electronics shut down. We had to guide the vehicle across traffic while coasting downhill to the shoulder beyond a guardrail. Traffic had to avoid us, creating a serious safety hazard. The vehicle would not restart. The vehicle was towed and required a complete engine replacement under warranty. After that replacement, additional issues followed. There was an hvac/defrost concern. In June 2025, the vehicle again became inoperable without warning while parked at a store. It would not start despite repeated attempts, including by a dealership representative. A diagnostic scan produced over a page of error codes, but the dealership could not identify a cause and stated the vehicle was safe. In Dec. 2025, the vehicle engine was inspected under a recall and I was told there were no issues. In Feb. 2026, the vehicle lost heat and was found to have no coolant despite regular maintenance and recent inspection. In Mar. 2026, at about 37,700 miles, the vehicle developed a loud clunking noise while driving. I stopped driving and returned it to the dealership, where I was told the engine had failed again and required another full replacement. The vehicle has now had two engine failures and three engines installed in less than three years. There were no warning lights or prior indications before these failures. I no longer believe this vehicle is safe or reliable for transporting my family.

Vehicle shut-off while driving on the expressway, around 70-75mph. Upon vehicle turning off, I had no option but to "coast" off to the left side, which thankfully, freed me from traffic for the most part. If anyone who have been a foot over, they would've hit me. I have had numerous electrical issues with this vehicle and have taken it to the dealership but they have been "unable" to duplicate the issue. Vehicle was immediately taken to the dealership (and they still have as of this incident report submission). They told me last night that they will keep it again today and test drive it again to see if they can get it to do anything but if it doesn't show anything new, they have nothing to diagnose and will give me my car back. After requesting a copy of repair orders and a list of the history codes in my car, I am beside myself that anyone thinks giving me this vehicle back to drive is ok. See the history code report in documents uploaded. These are major safety failures in a large vehicle.

On 3/3/2026 during the night-time hours, I was traveling on the freeway in my 2023 GMC Yukon at over 65 mph when I received a notice from the instrument cluster stating that the battery was low and oil pressure was low. Before I could pull over to a safe location, the Yukon turned off while in motion. My wife and two children were in the vehicle. The Yukon stalled in the number one lane of the off-ramp. I had to remove my children and wife from the vehicle while in the roadway on busy throughfares and in darkness. I attempted to jumpstart the Yukon, but efforts were unsuccessful. The Yukon was towed to the dealership where I purchased it purchased from. The Yukon was returned to my custody on 3/10/2026 stating it was an issue with the battery. While driving the Yukon home it began to bog down and stalled out in-front of my residence as it was being driven by my wife. After arriving home (night-time), I went to check the Yukon, and it started with no issues. I drove the Yukon to see if the errors would occur again. While driving the Yukon on the freeway, the Yukon rmps indicated close to redline and I received a notification from the instrument cluster stating to turn the vehicle off (traveling at about 70-75 mph). Once again, I was unable to pull off to a safe location before the Yukon turned off on its own while still in motion; I attempted to jumpstart the Yukon but attempts were unsuccessful. The Yukon was towed again to dealership. On 3/11/2026 I was advised that the engine had seized and on 3/13/2026 I was advised by GMC the engine needed to be replaced (this was covered under powertrain warranty). The approximate milage of the vehicle is at about 42,200.

The contact owns a 2022 GMC Yukon. The contact received notifications of NHTSA campaign numbers: 22v617000 (seat belts), 25v274000 (engine and engine cooling), and 22v903000 (exterior lighting). The vehicle was serviced under customer satisfaction program: n242436631. However, the failure occurred. The contact stated that after the serial data gateway module was updated, the check engine warning light remained illuminated. The vehicle failed to restart with the key fob, and the doors failed to unlock with the key fob. The vehicle was taken back to the dealer; however, the dealer refused to diagnose or repair the vehicle. The manufacturer was not made aware of the issue. The failure mileage was 177,000.

On [xxx], my 2022 GMC Yukon denali xl (VIN [xxx] ) experienced a complete loss of propulsion while I was driving on [xxx] in el paso, texas, with my wife and two young children in the vehicle. Mileage was approximately 50,364. While in motion, the vehicle was displaying abnormal behavior, concerned the vehicle would stall on the highway, I exited at the geronimo exit. As the vehicle slowed, it shut down entirely. Multiple restart attempts failed. The dashboard cycled on and off, displaying a "service 4wd" warning while the vehicle was in 2wd mode. The transmission locked, and the vehicle became inoperable in the middle of the roadway with traffic passing on both sides. Onstar sos was activated to communicate the unsafe location. The el paso police department was requested to divert traffic. A city tow vehicle arrived after approximately fifteen minutes; my family was assisted across the roadway. Roadside assistance did not arrive for approximately three hours. This was the second loss-of-propulsion event on this vehicle in less than twelve months. The first occurred in March 2025 and resulted in engine replacement under NHTSA safety recall 25v274 (l87 engine loss of propulsion). The [xxx] failure occurred after the recall remedy had been applied and the engine was replaced. The vehicle was towed to the dealer who replaced the throttle body, intake air duct and a service item titled "repair open ground circuit". I am filing this report to document a second loss-of-propulsion event on a vehicle that already received the remedy under recall 25v274, and to ensure NHTSA has visibility into the potential pattern of recurring or inadequate remedy on the l87 platform. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The contact owns a 2013 GMC Yukon. The contact stated that while driving approximately 65 mph, the rear tailgate opened independently. The failure had occurred on several occasions. The battery warning light was illuminated. The contact stated that while driving at approximately 55 mph, the vehicle lost automotive power. The contact pulled over to the shoulder lane and attempted to shift to park(p); however, the vehicle failed to shift to park(p). No warning lights were illuminated. The vehicle was towed to a dealer, where it was diagnosed that the transmission needed to be replaced. The vehicle was repaired. The vehicle was taken to a dealer to be diagnosed; however, the dealer stated that the failure of the battery light being illuminated was unknown. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 60,000.

See all problems of the 2013 GMC Yukon 🔎.

The contact owns a 2022 GMC Yukon. The contact stated that while operating the vehicle, the computer system malfunctioned, causing the instrument cluster to turn off unintendedly. Additionally, the doors failed to immediately unlock, and the driver’s side mirror could not be adjusted. The vehicle was taken to the local dealer, who was unable to determine the cause of the failure. The manufacturer was not contacted. The failure mileage was 22,000.

The SUV has 46,000 miles on it. Recently, the check engine light illuminated, prompting me to take it to the dealership for servicing. The diagnostic codes retrieved were u0285 and u1345. I was informed that the aero shutter required replacement. There was no physical damage; it merely ceased functioning. The dealership confirmed the active check engine light and conducted a diagnosis. While my safety was not immediately compromised, I felt extremely frustrated upon learning that gm would not cover the repair under warranty, despite this being a recognized issue that gm has yet to address. This situation is simply unacceptable and warrants further investigation and resolution.

I have a 2023 GMC Yukon slt. The onstar/telematics system stopped working. The blue onstar button does not function, and the vehicle no longer communicates with the mygmc app, resulting in the loss of onstar and connected services. A GMC dealership diagnosed a failed onstar/telematics module and advised that replacement will cost approximately $1,200. This creates a safety concern because onstar provides emergency services, including automatic crash response and the ability to request emergency assistance from inside the vehicle. A module failure could leave an occupant without access to these services when they are needed most. I am also concerned that onstar and telematics failures appear to be reported by owners of multiple gm vehicles, suggesting this may not be an isolated failure. I am requesting that this issue and similar complaints be investigated to determine whether there is a broader defect requiring a recall, warranty extension, service campaign, or other corrective action.

Rear camera for in cabin rear view is improperly sealed for cold weather and constantly fogs which renders the camera worthless. I was also sent brand new side lights from gm that were improperly sealed and built condensation them after a month or two.

Driver side mirror starts moving on its own without any physical buttons being pressed. Accident notification system has failed and has produced a cel.

Transmission went out very early. Had to get it replaced whenever I reverse. I have to really smash on the break in order for it to stop if it does stop so somethings wrong with the breaking whenever I hit a bump the left side suspension feels like I’m a lose control and sometimes my radio works and sometimes it doesn’t I’ve been trying to work with dealers I have extended warranty on it. They’re saying it’s not covered something about the brake pump is covered, but the belts are not. The transmission was put in only because it left me stranded. Otherwise I would’ve been stuck paying for that. The dealership actually helped me with that. My gps turns on and off sometime. I’m not sure if it’s electrical.

See all problems of the 2016 GMC Yukon 🔎.

This report documents two separate safety incidents involving the same vehicle that occurred on different dates. Approximately one month prior to the most recent incident, while driving my young children to school, the vehicle experienced a sudden and severe loss of braking effectiveness while in motion. I was unable to stop normally at stop signs and had to roll through and roll to a stop. I was required to press the brake pedal fully to the floor to slow the vehicle, and even then braking response was significantly reduced and not functioning as designed. The engine remained running and the vehicle could still accelerate. After stopping and restarting the vehicle, braking function temporarily returned. On a later date, while again transporting my children, the vehicle experienced a complete loss of power while driving. The vehicle abruptly shut down while in motion. I was unable to accelerate and experienced loss of power assisted braking. The vehicle only came to a stop after coasting. Following this shutdown, a burning or melted plastic odor was present. The vehicle was later towed and inspected by a dealership. The battery was replaced; however, this did not resolve the issue. After the battery replacement, the vehicle later hesitated to start again. The exact cause of these failures remains unknown. These incidents occurred without warning and represent serious safety critical failures involving braking and propulsion systems. Both incidents placed my children, myself, and other motorists at risk. Had either event occurred on a highway or heavily trafficked roadway, there would have been little to no ability to safely slow or stop the vehicle, creating a significant risk of collision or serious injury. Due to these events, I no longer feel safe operating this vehicle and have stopped driving it. The vehicle remains available for inspection.

I am writing to report a failure of the telematics module in our vehicle. The module stopped functioning without any warning or notification on the dashboard. Our vehicle has only 64,000 miles and has never been involved in an accident, so this failure is unexpected. This issue has resulted in the complete loss of onstar connectivity, meaning that automatic crash notification would not occur in the event of an accident. Additionally, we are no longer able to remotely unlock or access the vehicle through the app, as all communication capabilities are currently disabled.

While driving approximately 63 mph on a busy roadway, my 2023 GMC Yukon experienced a sudden failure of the brake system, including loss of normal braking capability along with failures of the electronic stability control (esc) and abs systems. The vehicle displayed warning messages stating “brake system failure” and “service esc” and entered a reduced-speed mode. Prior to this incident, there were no warning lights, messages, or symptoms indicating a problem. During the failure, the brakes became largely unresponsive, placing me, my two minor children who were passengers in the vehicle, and surrounding motorists at serious risk of a high-speed collision. After extended deceleration, a minimal amount of braking power partially returned, allowing the vehicle to eventually come to a stop. The vehicle has not yet been inspected by a dealer, manufacturer, police, or insurance representatives, and the issue has not yet been reproduced or confirmed by a service center. The vehicle remains available for inspection upon request and has not been repaired. This incident occurred without prior warning and involved a sudden and dangerous loss of braking capability at highway speed.

In 2023, the vehicle began exhibiting erratic transmission shifting behavior, including harsh and unpredictable shifts while driving. The vehicle was taken to a GMC dealer for diagnosis and repair. Recently, the vehicle developed additional drivetrain and engine control issues related to the crankshaft position sensor circuit. The vehicle stalled while driving on a highway mountain overpass with multiple vehicles traveling behind me. When the stall occurred, the vehicle shifted into park and would not restart for several minutes. This created a hazardous situation due to loss of propulsion in active traffic at highway speed and limited shoulder space. Following diagnosis, the servicing dealer determined that the engine wiring harness requires full replacement due to internal wiring integrity issues affecting critical engine control signals. The crankshaft position sensor and related wiring are essential for engine timing and propulsion. Loss or corruption of this signal can result in reduced engine power, erratic transmission behavior, stalling, or no-start conditions. The earlier erratic shifting behavior appears consistent with conditions described in gm technical service bulletin 21-na-149, which identifies engine harness-related causes for drivetrain and shifting concerns. This issue appears to involve degradation or defect within the engine wiring harness affecting engine management and transmission operation. Given that this condition resulted in a highway stall and temporary inability to restart, I am reporting this for investigation as a potential safety-related defect involving loss of propulsion.

I am reporting a catastrophic engine failure involving my 2023 GMC Yukon xl denali, which was subject to a gm-issued recall related to engine failure. On January 10, 2026, at approximately 1:00 a. M. , while traveling at highway speed (approximately 65+ mph) on a multi-lane highway, the engine suddenly failed without warning, resulting in a complete loss of power. I was forced to make immediate evasive maneuvers to reach the shoulder while avoiding semi-trucks and other vehicles. The sudden loss of power created an extremely dangerous situation for myself, my passengers, and surrounding traffic. After the engine failure, the vehicle could not be placed into neutral, preventing it from being moved out of traffic if it had stopped in an active lane. This design issue significantly increased the risk of a collision. I was stranded on the roadside for several hours in cold conditions awaiting a tow. The failure was later confirmed by an authorized GMC dealer, who diagnosed the engine as failed and replaced the entire engine assembly. The vehicle and replaced components should be available for inspection through the dealership. The manufacturer had previously issued a recall for this vehicle related to engine failure, and I had requested a buyback prior to this incident due to safety concerns. That request was denied unless the vehicle experienced a failure. There were no warning lamps, messages, or symptoms prior to the failure. The only warning message appeared after the engine failed, indicating an engine overheating or “engine hot” condition, which occurred after power was already lost. This incident represents a serious safety defect that resulted in loss of propulsion at highway speed with no advance warning.

Following a catastrophic engine failure in my 2023 GMC Yukon xl denali, I discovered that the vehicle could not be shifted into neutral once the engine failed. This prevented the vehicle from being moved out of traffic if it had stopped in an active lane. The inability to place the vehicle into neutral after a loss-of-power event creates a serious safety hazard, particularly on high-speed roadways. In the event of a failure occurring in traffic, occupants may be left stranded in a travel lane with no ability to push or reposition the vehicle, significantly increasing the risk of a rear-end or multi-vehicle collision. This condition occurred immediately following the engine failure and was not accompanied by any prior warning or instructions to allow safe vehicle repositioning. I am unaware of any manual or mechanical override that would allow the vehicle to be shifted into neutral under these conditions. This design behavior represents a safety defect because it compounds the danger of a propulsion loss by preventing drivers from removing the vehicle from harm’s way.

Vehicle status: brand new current mileage: approximately 10,000 miles incident description on 1/8/26, while operating the vehicle on the interstate at highway speeds with cruise control engaged, the check engine light began to flash. Simultaneously, the vehicle’s warning system issued an alert stating that the engine oil was excessively hot. Immediately after these warnings, the engine began to emit a loud knocking sound and lost all power, shutting off completely while in motion. I was able to safely maneuver the vehicle to the shoulder of the road. Post-failure observations upon inspection under the hood, I noted the engine was radiating extreme heat. I allowed the engine to cool completely before attempting a restart. While the engine attempted to turn over, it failed to start. Diagnostic alerts following the mechanical failure, I received multiple critical notifications via the GMC mobile app citing various engine failure errors. Summary given that this vehicle is brand new with only 10,000 miles, a catastrophic engine failure of this nature is unacceptable. The vehicle was being operated under normal highway conditions when it became inoperable, posing a significant safety risk. I am seeking a full diagnostic review and a permanent resolution under the manufacturer's warranty.

See all problems of the 2025 GMC Yukon 🔎.

I was driving on interstate and thank god I got off the exit and vehicle suddenly cut off. An indicator came on stating to push start to restart vehicle while the vehicle shifted to neutral on its own. Then a low oil pressure sign came up on dashboard. I tried push start again and nothing happened. Lucky by this time I was just off the exit so I was able to come to a stop and shift to park. I tried push start again and the dashboard just went dark and started making a clicking noise. After some time around 1 min I tried again and it did crank up and I was able to try and get as close the the edge as possible but still in a two lane road on the bridge of an off ramp. I say thank god because 30 seconds sooner I was going around 60mph with my 4 month old in the backseat. Lucky I got to the exit when this happened. From the research I have done apparently this happens a lot to this model I have 2024 GMC Yukon denali xl. I had a recall for this issues supposedly fixed back in October 2025. Things could of been much worse. Also this all happen coming from just having an oil change done at the dealer. Literally leaving the dealership going home. The dealership loaned me a vehicle they say for 3 days for free after that I may have to pay because it may not be covered by gm which is ridiculous. The vehicle is at the dealer and I will be waiting to hear there analysis.

The vehicle shifted into neutral while driving, locked out gear selection, triggered a transmission warning, and now will not restart.