Electrical System Problems of GMC Yukon - part 1

Engine shut off with no warning, all electronics disabled and couldn't shift out of park. Was driving down the road at approximately 50mph, Yukon shifted itself into neutral. Vehicle previously complied with the 25v-274 recall and passed, was operating on the new oil that gm recommended.

See all problems of the 2023 GMC Yukon 🔎.

On August 22, 2026, I was driving my 2023 GMC Yukon denali with the 6. 2l v8 at highway speed when the vehicle began struggling to maintain power while climbing a hill. The engine then developed a noticeable knocking sound. Shortly afterward, the engine shut off completely while the vehicle was moving, causing a sudden loss of propulsion. I was able to bring the vehicle to a stop, but the engine would not restart. The electronic transmission also would not shift into neutral and displayed a message indicating that the conditions required to shift were not met. Because the vehicle could not be shifted out of park, the towing company had difficulty loading and unloading the vehicle. The failure occurred during normal highway driving and created a significant safety concern because the engine shut down without warning while the vehicle was in motion. I am aware of NHTSA recall 25v-274 / gm recall n252494000 involving certain gm vehicles equipped with the 6. 2l l87 engine, as well as NHTSA engineering analysis ea25-007 concerning engine failures and loss of propulsion. At the time of this complaint, the dealership has not yet confirmed the specific mechanical cause of my vehicle’s failure. The vehicle is being taken to an authorized GMC dealership for diagnosis. I am submitting this complaint because of the sudden engine failure and loss of propulsion while traveling on a highway.

1. What component or system failed or malfunctioned. The fuel pump module failed unexpectedly while the vehicle was being driven. Failure caused the engine to stall, resulting in a complete loss of power and mobility. Unsure if part is available for inspection. 2021 GMC Yukon have a recall n252516900, but our VIN is not included in this. Can our VIN be added to this recall please? 2. How was your safety or the safety of others put at risk? the vehicle abruptly stalled while being driven through a parking lot, causing a complete loss of power and leaving the vehicle disabled in an active traffic area. Because the vehicle could not be shifted out of park, it became an obstruction, creating a hazard for other drivers navigating the parking lot and increasing the risk of a collision. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? yes. After the vehicle was towed to a local mechanic on a flatbed truck, the dealer diagnosed and confirmed that the fuel pump module had failed, which caused the vehicle to stall and lose power. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? the vehicle was inspected by a local repair shot, which diagnosed the failed fuel pump module. The vehicle was also evaluated during the towing process. To my knowledge, the manufacturer, police, or insurance representatives have not separately inspected the vehicle or component. 5. Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? prior to the failure, there were no significant symptoms indicating an imminent fuel system failure. When the incident occurred, the vehicle abruptly stalled, lost all power, and displayed a message indicating that the vehicle was "not in a condition to shift," preventing it from being shifted out of park. This message first appeared immediately following event.

See all problems of the 2021 GMC Yukon 🔎.

I was driving down the interstate when the rpms on my car increased and my car started to shutter. I went to get off the roadway and it put itself into neutral and lowered my speed. When I got on the shoulder it stalled and would not turn back on. I had to be towed. To this point, my car has been in the shop for over a week with no solution.

I have a 2023 GMC Yukon that has been to the dealership 3 times in a weeks time, and as of today, 8/31/26 will be the fouth time. On 2 occasions, the SUV has entered limp mode while driving. I had the SUV towed for the first limp mode, and the dealer claimed it needed recalibration modules. I picked up the car and drove home eight miles, and the check engine light came on. I returned the next day for readings and tcm p0700, p1789, u0101, u220f. The dealer's solution was to recalibrate the gateway module this time. I drove the car about 20-ish miles, and at highway speeds on the freeway, I got limp mode again. Off to the dealership, having the SUV towed again. The dealership has claimed the electrionic car codes clear themselves and because of that they can't re-create the codes to find a solution. I am scared to drive my SUV, I do not feel safe in it let alone my children.

As I was driving, the vehicle's air conditioning suddenly began blowing warm/hot air. Moments later, the check engine light and all electronic service stability lights illuminated on the dashboard. Simultaneously, the vehicle suffered a complete loss of electronic brake assist, resulting in an extremely hard brake pedal and a severe reduction in braking power. The vehicle also displayed a "no drive mode available" message. Third-party diagnostic scanning revealed network power codes u3018, u3505, p00ff, and p0700, indicating a total loss of power to the body control module (bcm). This is the second life-threatening incident with this vehicle I have experienced following a previous highway engine stall due to engine recall. The vehicle was towed to a gm dealership for diagnostic and emergency electrical repairs.

Driving on busy road when heard a squealing from the engine bay of the vehicle. Moments later the vehicle lost power. It was a very dangerous situation traveling approximately 45mph on a multi-lane road in urban st. Louis missouri. There was not a check engine light prior. The vehicle had a recall performed per GMC instructions prior (this amounted to a different viscosity oil. . . . ). The breakdown stranded my family and I while on vacation in another city. The vehicle was towed to a local GMC dealership and was diagnosed as a seized engine related to the recall. The engine is scheduled to be replaced as no cost through GMC's extended service. They have not provided coverage for the towing, for the multiple ride shares needed to get around on vacation, for the rental car needed to get home, or a rental car to help us with day-to-day life during the estimated 6-8 weeks we will be waiting. My family was at risk, other motorists on the parkway were at risk. It was pure luck and quick thinking that saved injury or loss of life. It is completely unbelievable GMC is letting these vehicles be on the road for peoples safety and for the money people pay as a consumer.

Water is entering the passenger cabin through failed front sunroof drain tubes on both the left and right sides. The drains discharge inside the a pillars rather than to the exterior, pooling in the driver's side floorboard. An authorized GMC dealer diagnosed the cause in writing on August 12, 2026 as rubber grommet shrinkage and hardened internal buildup preventing water from flowing through, on both the left and right sides simultaneously. The identical bilateral failure mode indicates a component or assembly defect rather than debris blockage. Water is accumulating in the driver's footwell in proximity to cabin electrical components and the fuse block area, creating a risk of electrical shorting, connector corrosion, and circuit failure. Mold has developed in the front carpet and padding on the driver's side, and water intrusion staining is present on the passenger side. The dealer has quoted $2,727. 16 to replace the drain tubes and the mold-damaged carpet and padding. The vehicle entered service on February 5, 2025 and has 45,211 miles. Gm has issued service bulletin 20-na-219 addressing sunroof drain hoses on 2021 Yukon, Yukon xl, tahoe, suburban, and escalade models.

The contact owns a 2026 GMC Yukon. The contact stated that while walking alongside the rear end of the parked vehicle, the hands free function of the lift gate opened up unintentionally, no warning lights were illuminated. The contact was not injured, however expressed concern for safety as the lift gate will open without user consent while walking along the rear end of the vehicle. The local dealer was contacted however the vehicle was not diagnosed as the contact was advised that the vehicle was manufactured with the feature. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 60.

On August 6, 2026, I was driving my family up to whitefish mountain resort (a steep mountain road to a ski resort) for dinner when the esc warning and "brake system failure" warning appeared. I immediately attempted to pull safely to the side of the road. When I pressed the brake pedal, the vehicle did not respond normally. I pushed the brake pedal as far down as I could and had essentially no braking ability. Because we were traveling uphill, the vehicle eventually rolled to a stop. When my brother came with his car he had a vehicle scanning tool. He hooked my vehicle up to it and the tool displayed diagnostic codes p25a2 and p3499. This was an extremely serious safety event. Had we been traveling downhill, approaching an intersection, or driving in heavier traffic, the outcome could have been catastrophic.

See all problems of the 2024 GMC Yukon 🔎.

The progressive failure of the factory steering wheel adhesive on my 2025 GMC Yukon creates an immediate, active safety hazard during vehicle operation. The material failure and sticky glue are localized directly around the integrated heating element of the steering wheel. This failure severely impacts driving maneuvers as well as a potential electrical fire hazard. The liquefied glue residue is incredibly sticky and continually transfers to the driver’s hands, resulting in a compromised, slippery grip on the steering wheel. During active driving maneuvers, such as hand-over-hand turning, navigating sharp curves, the loose edges of the peeling leather and separating trim physically catch on the driver's palms. This restricts smooth wheel rotation, disrupts natural hand movement, and threatens a sudden, temporary loss of steering control. This manufacturing defect introduces severe driver distraction and physical interference with critical steering components while driving, compounded by a potential thermal or electrical defect in the steering wheel heating assembly.

See all problems of the 2025 GMC Yukon 🔎.

While driving the vehicle on the interstate, the vehicle shifted to neutral without warning. Our daughter was able to fortunately coast to the side of the interstate without incident. The vehicle was shut off and attempted to turn back on without success, so vehicle was towed to lugoff chevy dealership where repairs are always performed. The dealership stated the problem was related to fuse block melted and shorted. The problem was fixed; however, I am not convinced that this shouldn't be something requiring a recall and needs further investigation. There was no warning lamps, messages, or symptoms prior to the failure.

I have a 2023 GMC Yukon at4. 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 loss of connected and onstar services. A GMC dealership diagnosed a failed onstar/telematics module and advised that the module must be replaced at a cost of approximately $1,200. I am concerned because this failure affects access to onstar communication and emergency-related services. I have found reports from other gm owners describing similar telematics/onstar module failures, and gm has issued service information addressing k73 telematics-module communication faults. I have also opened a case with GMC customer assistance. I am reporting this because I believe the repeated failure of a system used for emergency communication warrants investigation.

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.

See all problems of the 2022 GMC Yukon 🔎.

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.

Cameras go black and become inop randomly. Been in shop multiple times for concern. Software updates have been performed, modules replaced, cables, and now it’s back for the same concern.

9 months into ownership, with 24,000 miles I had complete engine failure pulling into an intersection. Slamming into park while moving and shutting down. This is a known issue with the gm 6. 2 liter engines but I specifically waited to order a 2026 as this was far outside the recall window gm had in place for this known issue and was led to believe the issue was fixed going forward. The car was towed to a gm dealer and sat for 39 days for a complete engine replacement. Now, a week after it has been returned it has sputtered and shut off as I am coming to a stop requiring a restart, not unlike stalling a manual transmission car. I think your agency needs to expand the investigation far further to include 2026 models. This is a 90,000 dollar brand new family hauler that I am supposed to trust my wife and kids are safe in. Now I cannot even trust it will safely take her through an intersection. Thank you for your time.

The daylight running light in the rear do not work, which is needed for night time driving. At night when parked or driving the rear is completely dark, except the license plate lights. When I press the brakes they turn on, the signal lights work even the reverse lights. I've switched them to manual mode still no luck. I've checked some fuses, they all check out, nothing blowen. From some research it's all conctrolled by the body control module. There are alot of cars with this same issue there should be a recall for gm to fix properly, dues to safety of the driver and public. We just bought this vehicle which, and didnt test drive at night. 3 days later we discovered it. We even bought new lights due to the number of complaints. They still don't work.

See all problems of the 2017 GMC Yukon 🔎.

The contact owns a 2023 GMC Yukon. While the contact's wife was driving approximately 5-10 mph on a city street and approaching a stop sign, the vehicle experienced a failure and became inoperable. The contact stated that while the driver was attempting to restart the vehicle, the battery warning light and engine warning light illuminated, and the "low battery - start engine" message was displayed. The vehicle was towed directly to a dealer to be diagnosed. The dealer was unable to determine the cause of the failure but provided an estimate for the valve springs inspection. The vehicle was not repaired. The manufacturer was notified of the failure and was working with the dealer to determine how to repair the vehicle. The failure mileage was approximately 71,481.

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.

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.

The panoramic sunroof has a substantial leak, even though the 2023 vehicle only has 33,000 miles on it. The drain lines are clear but water continues to significantly leak out of the rear passenger seatbelt housing onto the seatbelt. There is also significant water drainage through the rear interior lights onto the upper legs of rear passengers (children in car seats), causing a severe electrical hazard. The leaking caused by the drainage defect affects the interior lighting, the seatbelts, and is a potential electric hazard. This seems to be a common occurrence and the manufacturer should repair their defective products. The drainage pipes are obviously either not assembled correctly or the materials don’t hold up. This should not be occurring in a $55,000 vehicle with 30,000 miles. I have multiple videos I can provide but the file sizes are too large to upload, so I took screenshots. I am going to pay for the repair but I should be reimbursed by GMC.

The center screen (infotainment), which shows controls for cabin climate (a/c, heat) and many more functions of the vehicle fails to turn on at random times. It is available for inspection. The external air temperature is in the upper 90s; temperature inside the car’s cabin is easily 115 or higher. This makes safe operation of the car not possible. Additionally passengers cannot occupy the vehicle safely at these extreme temperatures. The problem has been reproduced by dealers. Unknown whether the components have been inspected by the manufacturer. No warning lamps or lights.

Onstar module stopped working for no reason.

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.

This is a supplemental report to my original complaint (NHTSA id xxx) regarding my 2024 GMC Yukon (VIN [xxx]). I am providing additional detail: prior to gm's recall being issued, I contacted hatchett Buick GMC by phone and visited in person on multiple occasions reporting engine sputtering, stalling, hesitation, and total loss of power and electrical shutdown while driving. I was repeatedly told these were minor issues not affecting anyone and not to worry about them. As a result, the vehicle was not formally serviced for these issues until September 2025 — roughly three months after the recall was finally announced, more than a year after I purchased the vehicle. Since that recall repair and a subsequent "best guess" repair performed by gm technicians (their own description, not mine), the vehicle continues to sputter, hesitate, stall, and intermittently lose power. I have ongoing safety concerns driving this vehicle information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

I lost all sound on my 2026 GMC Yukon xl with only 150 miles on it. Apparently this is a common issue that needs a recall.

The large central infotainment touchscreen (which controls climate control/ac, navigation/maps, audio, backup camera, and all primary vehicle functions) has repeatedly failed by going completely dark/blank without warning on my 2026 GMC Yukon denali xl purchased new on [xxx]. The screen has gone dark on three separate occasions. First failure occurred prior to [xxx]; vehicle was taken to champion GMC (7885 w grand river rd, brighton, mi 48114) for repair and returned to me. The screen failed again shortly after. Second repair attempt was made on 06/22/2026; vehicle was returned and the screen failed again immediately. The vehicle is currently at champion GMC for a third repair attempt as of 06/29/2026. Safety risk: loss of the screen eliminates access to the backup/rearview camera, speedometer display, climate controls (heat and ac), navigation, and warning indicators — all while operating the vehicle. There is no warning, message, or dashboard indicator prior to each failure. The screen goes dark suddenly and without notice. The problem has been confirmed and repair attempted three times by champion GMC. The vehicle has not been inspected by police or insurance representatives. The component is available for inspection upon request, as the vehicle is currently at the dealership 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 approximately driving 45 mph and turning onto an exit the vehicle suddenly reduce speed and lost power and the message "press start" had displayed. The contact stopped the vehicle and eventually restarted the engine and the vehicle operated as normal. The next day the vehicle was driven to the local dealer who was unable to duplicate the problem and determine the cause of the failure. The manufacturer was not yet contact regarding the failure. The failure mileage was 42,000.

While operating the vehicle, I began to hear a metallic grinding noise originating from the center of the engine compartment. The sound was clearly audible within the cabin. Approximately one mile before the vehicle ultimately failed, the engine began to malfunction. As I slowed to a stoplight, the vehicle started to shake before shutting off abruptly and entering a coasting state. All electrical systems powered down and the vehicle would not restart. Shortly thereafter, heavy smoke began to emit both inside and outside the cabin, visibly coming from the hood and through the air vents. There was also a distinct burning odor. I attempted to restart the vehicle multiple times without success. The dashboard displayed the message: “conditions not suitable to shift. ” due to the vehicle becoming disabled on a curve and posing a safety hazard, I contacted the sheriff’s office for assistance to prevent a potential collision. Upon their arrival, it was noted that the engine compartment and hood area were exceptionally hot, particularly where the smoke was originating. The dealership has since confirmed they have also been unable to restart the vehicle. The vehicle has been inspected by the GMC dealer and is currently pending further evaluation by a gm-certified mechanic to determine the root cause. Prior to this incident, there were no warning lights, system messages, or other noticeable symptoms indicating an issue.

Vehicle is a 2022 GMC Yukon denali with the 6. 2l l87 v8, covered by NHTSA recall 25v-274 (gm n252494001). The recall remedy was performed. The engine passed the dealer inspection and was given the higher-viscosity 0w-40 oil remedy rather than an engine replacement. On 05/26/2026, at approximately 43,000 miles, the vehicle suffered a sudden engine knock while being driven by my wife. At the same time, the dash displayed service esc and service traction control warnings, the vehicle's speed fluctuated on its own without driver input, and the air suspension cycled up and down while the vehicle was in motion. The vehicle had to be towed to the dealer. The dealer diagnosed a failed lifter with resulting camshaft damage and repaired it under the powertrain warranty. The vehicle was out of service approximately fifteen days. Shortly after the vehicle was returned, it began displaying a "theft attempted" message on the dash every day. I reported this to the dealer in writing on 06/15/2026 with a photograph at 43,898 miles. The dealer stated it was unlikely to be related and did not scan or diagnose it. On 07/14/2026, approximately 560 miles after the repair, the vehicle became inoperable and had to be towed to the dealer a second time. It is currently at the dealer and has not yet been diagnosed. The unexpected loss of power, speed fluctuation, and stability-control failure at road speed present a serious crash risk. This vehicle passed the 25v-274 inspection remedy and then experienced a valvetrain failure regardless, which is directly relevant to recall query rq26001 into the adequacy of that remedy.

Onstar module failure. No communication with vehicle in the event of emergencies. Safety systems disabled. No remote access to unlock/ lock doors. No remote start. No speed limit notification. All built in apps and WI-fi no longer functioning.

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.

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.

The vehicle has experienced recurring suspension, drivability, and pulling issues associated with the 4-corner air ride leveling suspension system since early ownership. The first major incident occurred at approximately 4,600 miles when the vehicle displayed suspension warnings and would not accelerate properly past highway speeds. Since that time, the vehicle has repeatedly experienced pulling during acceleration, unstable ride behavior, suspension/leveling concerns, alignment-related issues, and drivability instability. The problem has been reproduced multiple times and documented through approximately 16 repair visits and roughly 74 cumulative days out of service. Dealership service records include repeated suspension inspections, drivability evaluations, wheel alignments, and related repair attempts. The issue remains unresolved and the vehicle is currently back in service again for the same concern. The recurring pulling and instability create safety concerns because the vehicle does not consistently track properly during acceleration and normal driving conditions. Suspension warning messages and drivability symptoms first appeared early in ownership while the vehicle was still under factory warranty. I have also found many similar owner complaints online involving the same suspension system in comparable gm full-size SUV models.