Other Fuel System Problems of GMC Yukon - part 1

The vehicle has the l87 gm engine. It lost complete power and the engine seized up and would not start again. Fortunately I was able to roll into a neighborhood and get off the main road with no issues. The dealer has confirmed the seized engine and a replacement engine has been ordered with no eta. There was no prior warning of the failure, besides a shuddering, like I was running out of gas, and then a lose of complete power.

See all problems of the 2023 GMC Yukon 🔎.

Engine stalling, a rough-running engine, reduced power mode (sluggish acceleration), a "check engine" light, or the vehicle failing to start. It started puttering really bad and died in the middle of the intersection. Check engine light came on. I got it to start, was really hard start and puttered bad then it died again and then I got it to start again, was a really hard start and puttered and died again. I was able to start it again get in the driveway but couldn’t go very fast. Check engine codes present are p2635 and p018b.

See all problems of the 2017 GMC Yukon 🔎.

While driving my 2022 GMC Yukon with approximately 150,000 miles, the engine suddenly began running rough and I immediately pulled over. The vehicle had to be towed to the dealership. The dealer diagnosed a collapsed lifter and camshaft damage and recommended full engine replacement at a cost of about $9,450. The vehicle had no prior engine issues and most miles are highway miles. Sudden engine failure while driving creates a potential safety hazard due to loss of power. I am reporting this because I understand there are ongoing investigations into gm v8 engine failures and I believe this failure may be related.

See all problems of the 2022 GMC Yukon 🔎.

My 2023 GMC Yukon denali with the 6. 2l v8 suffered a sudden loss of propulsion while traveling at approximately 70–75 mph on the highway with my wife and young daughter in the vehicle. The engine rpm dropped immediately to zero and the vehicle displayed a message instructing me to press start. I do not recall any meaningful prior warning lamps or symptoms before the failure. I did not hear a loud bang or other dramatic engine noise; the vehicle simply lost power and would not continue driving under engine power. I had to coast across lanes/shoulder to a stop, which created a serious safety risk to my family and other drivers because the vehicle lost propulsion at freeway speed without warning. After stopping, the vehicle would not restart. Pressing the start button produced only a click from under the hood and the engine would not crank. The vehicle was towed to a GMC dealership in victorville, California. The dealer has since confirmed that the engine requires full replacement. The failure has therefore been confirmed by an authorized GMC dealer and the vehicle should be available for inspection through that dealership/manufacturer if requested. This is especially concerning because this vehicle was already part of the known gm 6. 2l recall population and had supposedly passed the recall inspection/remedy before I purchased it. Despite that, the engine still failed catastrophically only about 1,355 miles into my ownership. Purchase mileage was approximately 26,343 and failure occurred at approximately 27,698 miles. Based on what the dealer told me, the failed component/system is the engine assembly.

2023 GMC Yukon xl 6. 2l v8 experienced progressive engine defects starting in first year. At 7,445 mi (Jan 2023), first dealer visit for engine issues. At 10,315 mi (Apr 2023), cyl 2 fuel injector failed (internally open), vehicle towed to dealer, replaced under warranty. At 14,982 mi (Aug 2023), identical cyl 7 injector failure (internally open), replaced under warranty. Two identical failures on different cylinders within 15,000 mi indicates systemic defect. By 30,409 mi (Aug 2024), dealer performed engine decarbonization due to carbon buildup from fuel injection issues. Dealer recommended additional decarbs at 38,077 mi and 42,577 mi. At 56,028 mi (Mar 2026), engine suffered catastrophic failure: piston ring failure causing excessive oil consumption and engine destruction, requiring full engine replacement. This matches gm's known 5. 3l/6. 2l v8 piston ring defect (subject of $150m class action settlement). Defective injectors caused incomplete combustion, carbon buildup on piston rings, ring tension loss, and catastrophic engine failure. Vehicle also has unfixed suspension defect (camber bolt/alignment). Vehicle visited dealer 8+ times. Engine failure poses serious safety risk from sudden power loss at highway speeds. Vehicle available for inspection.

My vehicle was one of the vehicles that was subject to the engine failure recall by gm. I took it to the dealership for the “repair“ where I was told the oil was changed to a different weight. Last night, I was driving down the road and all of a sudden my car just stopped. It still had power, but the engine had stopped. I tried to restart was unable to.

Exhaust fumes and stink on cold start . Vehicle only has 40,000 mi and I have exhaust smells coming in through hvac system!!.

See all problems of the 2021 GMC Yukon 🔎.

2026 Yukon elevation with 3,957miles. I was driving down the road and pulled into the turn lane at an intersection. Vehicle cut off with the auto start/stop function and would not start back up. I continued and tried to restart the vehicle but would not start; I was blocking the lane with cars continuously going around me. Vehicle stated service transmission on the display- I was unable to put it into neutral to push it out of traffic; you are only allowed to put it into neutral when crank and couldnt get the accessory mode to come on without the vehicle trying to start. I called the local police department and they sent an officer to direct traffic until a tow truck showed up. Both observed the vehicle not starting. There were no symptoms prior to the vehicle cutting off, only once auto start/stop initiated did the vehicle not restart. Vehicle will be sent back to the dealership tomorrow to resolve this issue. I have dash cam footage of the incident and photos of the display on the screen.

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.

See all problems of the 2024 GMC Yukon 🔎.

My vehicle has been in 16 times since I bought it the most recent incident is for the engine which started about six months ago. It’s been in since then for other issues concurrently with this one it hesitates like it’s getting stuck in sand before it wants to go first the mechanic told me he didn’t sense it but the thermostat was stuck open so they fix that. Second time it went in they thought it was some sort of a filter and some other components I’m not sure. Again it was not fixed then my son and I were out in minnesota freezing cold night in November and go and drive and then when again it was the drive train this time that got fixed a month ago about a week ago it starts making a noise like there’s too much snow in the tires. I get my car washed every few days but I got it washed again and that didn’t fix it so it’s in the shop again and I’m paying for a rental again. I have the walser guard thank the lord because it’s paid for itself about 15 times over. I’ve gotten two transmissions, an air conditioner, two sensors the arm that other people have complained about I don’t know exactly the name of it the trailer component that you plug into also blew out my seven way and I had to have my seven way wire fixed so I’m nervous about plugging that back in. My dad passed away and I spent $70,000 of my inheritance by this car. I should’ve flushed it down a toilet instead. Everybody makes fun at work that this car is literally gonna kill my kids and I because every other day it feels like we’re stuck on the side of the road.

See all problems of the 2016 GMC Yukon 🔎.

Vehicle has 2200 miles, equipped with the diesel engine and failed at a red light. Gm has to install a new engine.

I have a 2024 GMC denali that had an engine service appointment in September 2025 for the engine recall where they did an oil change & put in performance grade oil & scoped my engine. Rochester serra GMC said they sent all the engine pictures to gm and my engine was okay according to them. After that appointment in November my engine light went on and my denali was leaking oil in my driveway. We took the truck back to serra GMC rochester and they replaced the oil filter that they said was defective & an oil change was done after my husband requested that just filling up the oil was not okay. They also told us the engine light didn’t show up on their computer system and it must have cleared out, so nothing was done for that. Today 1/25/26 now about a month later my engine light is back on and has remained on with multiple starts. This is not acceptable and needs to be investigated and I want this escalated. I do not feel comfortable driving my truck with this engine light on with a known engine propulsion recall that has no actual cure. The oil replacement and cap change has done nothing and engine light remains on. I just don’t want to hear the same thing that the computer must have cleared the error code. My engine light is on for a reason and I’m asking for a thorough diagnostic test to be done by a certified technician and a get a valid explanation of why my engine light keeps going on & not just changing my oil or waiting for something catastrophic to happen to me or my family. Gm is putting me and my family at risk by saying that my truck’s engine is fine when clearly the engine light keeps repeatedly going on for 3 months in a row now since November 17, 2025.

2023 Yukon denali has now broken down twice, leaving myself and my family (husband and children). This last time was on Friday 1/16/26 while we were out of town, the car began malfunction and then we had complete engine failure while drive 70mph down the highway, again, leaving my family stranded on the side of the road, on a busy highway, in an unsafe environment in the winter.

I have a 2021 GMC Yukon with 74,000 miles I was recently told I need a new transmission. I am am trying to understand why a car that is 5 years with all the services done by lehman GMC in north miami would need a new transmission they have been servicing this car and no one mention anything breaking down of need of repair until now. I spoke with the service manager franklin and he stated to me another client had the same issue and he flush the transmission just like I am doing today and it only worked for a short time and afterwards he had to replace the transmission. I feel this is a problem with these models and GMC don't want to address it. They just want the customer to pay for the repairs. Now I spoke to the manager and the salesman that sold me the car and nicely told me he was sorry and he could get us out of this into a 2026. Now why would I buy a new car if they cannot get the 2021 right. I have included my invoice below I feel some one should look into this I feel this is a recall matter and GMC is trying to pass the buck. Thank you [xxx] [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

****this complaint is an addendum to odi complaint #11715415 **** this report updates the prior complaint to reflect complete engine seizure and pending engine replacement following post-repair loss of propulsion. I respectfully request that NHTSA include my vehicle’s failure in its ongoing evaluations related to l87 engine failures, including recall 25v-274, engineering analysis ea25007, and recall query rq26001. My 2024 GMC Yukon xl denali experienced progressive internal engine failure beginning at approximately 61, 975 miles. First attempt: the vehicle required camshaft and lifter replacement due to internal mechanical damage. Immediately after 4. 5 week repair, the vehicle suffered sudden loss of motive power at highway speed.   the engine shut down without warning at 75 mph with children in the car. (car was in owners possession for no more than 15 hours, and was driven 25 miles on the highway when it switched to neutral and shut down). Second attempt: the vehicle was towed back to the dealership. Additional electrical repairs were then attempted. (fuse box) it shut down again during dealer testing. Third attempt: subsequent internal inspection revealed cylinders 5 and 6 seized, requiring full engine replacement. This represents: • repeated loss of motive power • escalation from top-end failure to catastrophic lower-end seizure • failure occurring immediately after dealer-performed repair(s) • a 2024 model-year vehicle with relatively low mileage given NHTSA’s ongoing investigations into post-remedy failures (rq26001) and out-of-scope bearing failures (ea25007), I request that this incident be evaluated as part of the broader defect pattern analysis.

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 🔎.

About 4 weeks ago my vehicle began shaking uncontrollably while driving. The check engine light illuminated and multiple warnings appeared including emissions system, variable valve timing system, engine and transmission failures shown on the GMC app. I contacted the selling dealership and was given an appointment 4 days later. Later that day I drove less than 5 miles to pick up my children from school. During that drive the vehicle filled with a strong gasoline odor and exhaust fumes were overwhelming. I feared the vehicle could catch fire. I contacted the dealership again, stated the vehicle was unsafe, dropped it off at approximately 8:00 pm and was required to obtain my own rental vehicle. After one week I was told the engine required a camshaft and lifter replacement. Inspected & approved by extended warranty, parts were ordered and installed. I retrieved the vehicle on 23 days after the initial failure. The following morning (24th day) while driving approximately 75 mph on a major interstate with my children the vehicle suddenly shifted into neutral and would not re-engage. I was unable to shift into any gear and coasted to a narrow shoulder inches from traffic and guardrail. The dashboard stated the vehicle could not shift into gear and instructed me to push the start button. The engine would not restart. We were stranded approximately two hours in 10-degree weather on a major interstate with heavy semi-truck traffic. Roadside assistance was required. 3 days later the dealership stated the failure was a fuse block. After replacement the vehicle was test driven and stated to be operating normally. A second dealership employee test drove the vehicle, it died again and had to be towed back to the dealership. The battery was replaced after draining while disabled. Repeated mechanical and electrical failures resulted in complete loss of power at highway speeds and placed my children and me in immediate danger. I no longer believe this vehicle is safe to operate.

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.

On [xxx] driving to denver the 52,000 mile Yukon started making a clicking sound when accelerating on the interstate. Traction control light came on as well as the check engine light. Low power was noticed and we immediately pulled over as it sounded like it was going to blow up. Towed the vehicle 145 miles where we bought it and the shop confirmed the lifters and 5th cylinder are the issue and that the cams could be damaged. Recommend replacing each side. The car is basically new and under the 60k drive train warranty but about 100 days past the 5 year mark. Terrible timing. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

I was driving and a message popped up "service traction control", then another message popped up "forward collision system unavailable". Then the car started making this knocking sound and every time I would try and accelerate there would be a loud sound and almost a pulling stopping it from picking up much speed. I took the car into the dealer/repair shop and they said it was an issue with the lifters that had to be replaced and potentially an issue with the cam. They said this repair would cost upwards of $6,000 and I have never had this issue with the car before. This came out of nowhere and the car had not been showing any signs of this occurring before. This is a 2021 GMC Yukon and I drive my wife and three sons in that car daily.

There is a hesitation when trying to accelerate. The car will then slam forward and there is a rattling noise that the car also makes. This has almost caused accidents. I was driving in town which is where I do most of my driving.

Filling this vehicle with diesel fuel per the manufacturer's user manual instructions results in a fuel leak centered between the rear wheels from somewhere at the top of the fuel tank. This has occurred during almost all fuel fill-up stops over the last year. The local dealer could not find the problem. A similar issue occurred with the 2021 diesel Yukon which has the same fuel tank as verified by part number. This was quietly remedied under warranty by the manufacturer.

High pressure fuel pump housing failed and filled the cabin with fumes. Rendered the the Yukon unsafe to drive with fuel flooding the engine compartment. Took the dealer 57 days to repair the car. No warning lights, only indication was the fumes in the cabin.

Engine failed 1400 miles from home on 6. 2l engine - days after getting l87 engine loss of propulsion recall service. Recall service completed on 12/1/2025 - cap and oil change done - full engine failure on 12/22/2025. 12/1/2025 - l87 engine recall service done at GMC dealership - quincy IL 12/16/2025- check engine light came on - went to same dealership - cleared it told me I was fine to drive across country 12/22/2025 - full engine failure on GMC Yukon denali.

On 8/22/25 was brought to my local GMC dealer for the l87 engine propulsion recall. The dealership tested and said the vehicle passed the test. On 12/3/25 while driving on a multi lane highway the vehicle engine stopped abruptly. The message restart engine appeared on the dashboard. I had to negotiate other vehicle travelling at highway speeds to get to coast off to a side street. The transmission went into "park" and could not be shifted to neutral with a message on the dashboard "transmission cannot be shifted in this configuration". I was blocking the roadway and responding police asked that I attempt to restart the vehicle. I did this numerous times but would not start and the battery ran down. The vehicle was towed to the GMC dealer who said the battery failed and replaced it at my cost even after I told them it was fine and run down from trying to start numerous times while blocking traffic. On 12/17/25 while trying on the same highway, the engine abruptly shut off again in high speed traffic with the same message. I couldn't get fully in the shoulder dye to residual snow from plowing coasting powerless as the vehicle slowed. The transmission locked into park again and I ended up getting towed back to the GMC dealership. They advised me the engine seized up and would have to be replaced. I am still waiting to get the vehicle back.

While driving on a two lane road, my vehicle put itself into neutral without me doing anything and the engine stopped. All things powered down. The engine stopped. Not propulsion, nothing. I tried to pull over to edge of road. Car would not start - no activity. The vehicle had to be towed to the dealership. My safety was put at risk by my car simply stopping while driving down the road. The dealership has confirmed the engine needs to be replaced. There was no warning of engine problems or any indicators.

I am writing to formally express my dissatisfaction with the vehicle I purchased from your dealership. Despite my expectations at the time of purchase, the vehicle has not met the standards that were represented to me. This letter is intended to address my concerns regarding the vehicle’s features, undisclosed recalls, and significant mechanical and safety issues discovered immediately after delivery. I discovered—through the GMC mobile application, not through the dealership—that the vehicle had two to three active recalls at the time I received it, including recalls involving the engine and transmission. I was never informed of these recalls by the dealership prior to or at the time of sale, which is extremely concerning. After discovering the recalls myself, I scheduled a service appointment. I was informed that the recalls were addressed and marked as resolved in GMC springdale. Despite the recalls being cleared, only two days later, the vehicle began experiencing issues. The screen displayed warning messages, and the vehicle developed a vibration, to the point that it became unsafe to drive. They are changing us $820+tax I was forced to use roadside assistance, it hasn't been a month yet and the dealer are refusing to cover the damage. I have been calling but they said they are busy or they use somebody else to speak.

Misfire then replaced plugs,coils and wires, then change fuel injector, and problem still there, then started truck and was tossing power and motor started ticking. Every shop told me this is the same common problem they're having with all 6. 2l engine and they're all on recall by gm. I know 2016 are not in recall but I think they should be because this problem is in all 6. 2l engine.

I'm vehicle has experience both active recalls for similar model year but my VIN isn't listed as been one that is covered by the call. 25v274000 and 21v739000.

Good afternoon, my 2023 GMC Yukon xl at4 with the 6. 2l l87 engine (approx. 61,000 miles) suffered a sudden and complete engine failure at highway speed while I was driving between canton, OH, and columbus, OH, on the expressway, returning to my home in cincinnati. There was no warning before the engine lost all power and propulsion. I was traveling in the left lane of the interstate in moderately heavy traffic. When the engine shut down, I only had steering and braking available to me. In addition to losing all propulsion, I also lost all electronics, and there was no shoulder. The complete dashboard shut down. The only reason there was not a collision was that the traffic around me could see what was happening and slowed down themselves. I coasted on through the onramp and found a shoulder where I had three lanes of traffic on my left and two lanes on my right. Less than two months before this incident, the vehicle had been inspected and serviced by an authorized gm dealer, and no engine issues were identified. I was given no indication that the engine was at elevated risk of failure. After the breakdown, gm and the dealer determined that the failure falls under gm safety recall n252494002 / NHTSA campaign 25v274000, which involves internal engine defects in the 6. 2l l87 that can cause a loss of propulsion in certain gm trucks and full?size suvs widely used as family vehicles. Gm is replacing the engine, extending the warranty, and providing a loaner, but this does not change the fact that my family was exposed to a serious safety risk, nor does it address the possibility that other owners may experience sudden loss of propulsion even after their engines “pass” dealer inspection. I am submitting this complaint so NHTSA is aware that a recalled 6. 2l l87 engine, inspected shortly beforehand, still failed without warning at highway speed in a primary family?hauler vehicle, creating a dangerous situation. Regards, [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(.

I got 3 messages on the dash going off simultaneously 1. Service traction control system 2. Forward collision system unavailable 3. Service esc I could feel the truck bogging and shaking a little at this point then soon after the check engine light was flashing and it was noticeably misfiring and rough idling. I pulled some codes at oreillys and got back 1. P0300 misfire 2. P050d cold start rough idle.

The fuel pressure line from the fuel pump to the flex fuel sensor chaffed a pin hole leak near the front top of the fuel tank. This caused a significant fuel smell and trace leak at the front of the fuel tank which could lead to a fire or explosion. The new hose has a longer chaffing covering leading me to believe gm knew about this issue. Vehicle has 127,000 miles. I feel gm should reimburse me for this repair as a fuel line should not have ever chaffed through and leaked.

On November 14,2025 my engine failed on the highway going 80 mph to 0 mph in the passing lane. Almost caused a major accident on us23. I’ve asked my dealership bowman Chevrolet repeatedly to inspect my engine for the recall and have been denied every time. Most recent was October when I had my oil changed and I was told it wasn’t my turn and the recall for my vehicle was pending. I had my vehicle flatbed towed to the dealership where it sits dead in their parking lot. Thank god we didn’t die on the freeway that night. It was a horrible experience.

While driving northbound on i2 at approximately 70mph I experienced a sudden loss of engine power. Vehicle would not accelerate and engine ultimately powered off. I was able to move across three lanes of traffic and pull over on the side of the highway. I attempted to restart the vehicle but was unsuccessful and after about 10 minutes the engine managed to start. The ‘check engine’ light was on after the incident and upon arriving back home I ran a code scan that resulted in code p129f indicates a problem with the fuel pump control module. There is recall #n252516900 dated 9/11/2025 which covers this issue for 2021 models only. This occurred on a 2023 model.

Driving through the intersection of n. Scottsdale road and e. Bell road in scottsdale az my collision warning red light flashed on the screen and the engine turned off. This caused me to lose forward propulsion and forced me to navigate to the side of the road to avoid being hit by another car. At van’s GMC, the service manager told me that we experienced a catastrophic engine failure and that the engine seized. Vehicle has been inspected, but I have not received an official diagnostic even though I have requested. There were no warnings or indications that the vehicle was compromised prior to the engine turning off.