general problems of the 2021 GMC Yukon - part 1

My 2021 GMC Yukon has approximately 36,900 miles. On September 12, 2026, the vehicle was at an authorized GMC dealership and passed a state safety inspection. On September 19, 2026, the check-engine warning light illuminated and I returned to the dealership. The dealer performed diagnostic testing and told me the fuel pump pressure was approximately 400 psi when it should be approximately 700 psi. I was told the fuel pump needs to be replaced. The vehicle is currently at the dealership awaiting the replacement part: fuel pump I was not aware of a fuel-pump failure before the warning light appeared. I am particularly concerned because this failure occurred at only approximately 36,900 miles. Gm previously recalled 3,386 2021 GMC Yukons under NHTSA campaign 21v-739/gm recall n212332040 for a fuel-pump power-control-module defect that can cause the fuel pump to fail or operate intermittently, interrupt fuel flow and potentially cause the engine to stall. My 2021 Yukon is not included in that recall and currently shows no unrepaired recalls associated with my VIN. I believe this represents a potential safety concern because inadequate fuel delivery or a fuel-system failure while driving could cause reduced engine power or an unexpected stall, increasing the risk of a crash. Given the low mileage, the dealer-confirmed fuel-pressure problem, and the existing fuel-pump-related safety recall affecting other 2021 Yukons, I am concerned that my vehicle may have the same or a related defect despite not being included in the recalled population. I believe NHTSA should evaluate whether additional 2021 Yukons should be included in a safety investigation or recall. I am paying out of pocket to have the fuel pump replaced and am filing this complaint to document the failure. A fuel-pump failure at only 36,900 miles is extremely concerning. I ask NHTSA to determine whether my vehicle has the same or a related defect and whether the existing recall population should be expanded.

Part number 13554821 fuel pump control module has failed 2 times. April 2023 on interstate 95 near savannah GA in very busy traffic. Vehicle buckled and seized, just barely made it to the shoulder of the road. Same part failed again 9/18/26 while turning onto sunrise hwy in NY another very dangerous situation as we were stranded in the middle of a very busy intersection.

6. 2l engine has the oil change update, and engine failed recently. Took vehicle for repair to golling GMC dealer. Waiting on feedback.

According to the gm dealership the rod bearing failed disabling the engine. Dealer recommends replacing the entire engine. This consistent with recall n 252494000-n252494003 but my VIN is not included in the recall. Estimated repair $11,200. Our family was traveling roughly 55 mph on the interstate at the time of incident.

Was driving the vehicle at 70 mph on the highway without any issues for several hours and suddenly the vehicle lost power and had no propulsion. It went into neutral automatically and the engine shut off while driving. Thankfully I was on a downward slope and could steer the vehicle off the very busy highway. Once safe, I tried to restart the car but the engine would not start or turn over. Roadside assistance came to help as well as a flatbed tow truck. It was taken to a nearby GMC dealer but it remains completely dead despite the battery being fully charged and all of the electronics working. No known error codes are showing up. It’s an l87 engine and was part of the gm recall. The recall work was completed in Nov 2025.

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.

I am filing a safety complaint regarding my 2021 GMC Yukon. While driving on the highway during a long-distance trip from [xxx] to [xxx], my vehicle suddenly experienced a serious loss of power, drivability issues, and loss of propulsion. The vehicle began shaking violently, slowing down unexpectedly, and struggling to maintain speed while in active highway traffic at highway speeds. At the time of the incident, the vehicle displayed a warning message indicating “conditions not correct for shift” at approximately 127,506 miles. Shortly after, the vehicle set diagnostic trouble code p0011, which relates to the engine and transmission system not performing as expected and indicates an issue with the variable valve timing (vvt) system affecting engine timing and performance. The vehicle also entered a reduced performance state, and I was advised through the vehicle’s warning system to reduce speed, avoid hard acceleration, and avoid heavy load conditions. Despite following these precautions, the vehicle continued to run poorly and became increasingly unsafe to operate in highway traffic. This created a serious and potentially life-threatening situation, as I was traveling in fast-moving traffic and the vehicle lost normal propulsion and stability. I had to carefully maneuver out of active traffic lanes to avoid a potential collision. The vehicle eventually required roadside assistance/towing due to its inability to operate normally. Diagnostic trouble codes and warning messages were present at the time of failure. After the incident, I checked my VIN through the NHTSA recall system and discovered that my vehicle has three unrepaired safety recalls. Of particular concern NHTSA recall number: 25v274 gm manufacturer recall number: n252494000 this recall involves certain gm vehicles equipped with the 6. 2l v8 l87 engine and describes a manufacturing defect in the connecting rod and/or crankshaft components that may result in engine damag information redacted pursuant to the freedom of information act (foia),.

My 2021 GMC Yukon xl recently suffered a failure of its fuel pump control module. This occurred at just 44,000 miles, mere weeks after my manufacturer warranty expired in June of 2026. This issue goes far beyond a financial inconvenience or a matter of consumer reimbursement; it is a severe, life-threatening safety hazard that gm has failed to permanently resolve. My experience: sudden power loss while towing the gravity of this part failure became clear during a recent drive. I configuration-matched this vehicle—a heavy-duty Yukon xl with a 6. 2l engine and a 4x4 towing package—specifically for its capacity to safely haul heavy loads. While traveling with a trailer attached, the vehicle experienced a sudden, catastrophic loss of engine power. Without warning, the engine sputtered and died. Had this occurred on a steep incline, a blind curve, or in heavy highway traffic, a catastrophic multi-vehicle collision would have been entirely unavoidable. Critical safety hazards and concerns •inability to maintain speed, loss of vital assist systems, & compounded towing risks systemic failure and inadequate remediation what makes this situation entirely unacceptable is that this specific vehicle was already subject to previous gm safety campaigns regarding this exact component (including safety recall #n212332040 and subsequent emission recall #n252516900). Gm is fully aware that their supplier produced defective modules that are prone to premature internal short-circuits. Yet, their remediation strategy has been entirely inadequate. By managing this through piecemeal, phased rollouts and limited VIN inclusion lists, they are leaving dangerous vehicles on the road until the point of failure. Drivers are effectively acting as crash test dummies, waiting for their engines to die in dangerous environments before gm acknowledges that their specific VIN was fitted with the defective supplier part.

I was driving down the highway and all at once a bunch of different lights and emergency warnings started flashing on my dashboard and my car was almost like sputtering like it wasn’t getting the gas it needed or something. You could feel lots of movement right up front and I was forced to pull over and get towed. They said the engine would need to be completely replaced.

Check engine light comes on and an alert says "acceleration reduced" dealer says the coolant control valve is bad but the engine never overheats but the fans are running max speed 100% of the time.

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

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

I was driving in the left lane on [xxx] , a 4 lane interstate just outside of cleveland when I lost engine propulsion. Engine rpms dropped to under 1000rpm, and quit responding to throttle. I had to change lanes and coast until there was a shoulder available to stall out at while I awaited a tow. No warning lamps until I tried to restart vehicle. Engine cranked but wouldnt start. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The vehicle suddenly began vibrating noticeably when idling and at low speeds. About 30 minutes after this started happening a warning lamp lit up. We drove the vehicle about 2 miles to a local auto parts store to get an initial computer diagnosis of the issue. The test resulted in a code of "p0304" which detected a cylinder #4 misfire and recommended a fuel injector replacement. We brought the vehicle to a local mechanic to get the issue further evaluated. After this evaluation, it was determined that the cylinder #4 misfire was related to a lifter failure. The mechanic explained that this situation could possibly have caused more damage, specifically to the camshaft, but that job was bigger than he was willing to take on. He recommended we get the vehicle towed to the dealership for further evaluation. He also informed us that this situation was common with the engine in this vehicle and GMC is aware of it. He directed us to some articles online that elaborated on the potential known issues related to the automatic fuel management (afm) system and the related engine damage. The vehicle was towed to a local GMC dealership for evaluation. They found the failed cylinder #4 with associated lifter failure and damaged camshaft. We went forward with the repair at the dealership. We asked the dealership about the known engine issues with this vehicle. They acknowledged the widespread issues but informed us that our particular VIN has not been included in any recalls or safety notifications, so we were responsible for the repairs. The vehicle spent nearly 3 weeks at the dealership. One of the parts was on backorder due to a national shortage, which delayed the repair by about one week. That seems to imply that the parts involved in this repair are in high demand, which raises the question of this being a manufacturing/parts issue that may need to be investigated further.

The vehicle drove normally earlier in the day with no major drivability concerns. Later, reverse gear suddenly stopped functioning and the engine would rev abnormally without the vehicle moving properly while in reverse. Shortly afterward, while driving, the vehicle displayed the warning message “reduce acceleration – drive with care” and began losing acceleration and propulsion. The vehicle would not accelerate normally and later could not exceed approximately 20-35 mph. The condition created a significant safety concern due to sudden loss of acceleration and propulsion while operating in traffic. The engine rpm would increase abnormally while the vehicle failed to respond properly in drive and reverse. An independent mechanic inspected the transmission and found diagnostic trouble codes p0747, p0776, and p0700 related to transmission pressure control and valve body operation. Inspection also revealed significant metal contamination, sludge, and clutch material inside the transmission pan and filter. Reverse and 2nd gear were determined to be failed/burnt internally. The vehicle was later transported to an authorized GMC dealer for inspection. Dealer confirmed reverse gear would not engage even after adding transmission fluid. Vehicle is currently available for inspection.

2021 Yukon denali. Inspected by dealer under recall. Passed dealership test and new oil viscosity adjustment completed by dealer at 39k miles. Told no issues with vehicle continue to drive it. Today 4-14-26 on the interstate traveling 75mph the engine seized and lost all power. Instrument panel showed 0rpm as I coasted to a stop and the engine lost all power. I placed the vehicle in park on the shoulder and attempted to restart. Nothing! engine would crank. Towed to olathe GMC dealer and they took one looke at it , diagnosed it said it had all symptoms of total engine failure. Ordered me an engine and told 6 weeks out. Sent me home in a loaner. Service department told me they get one everyday sometime more than 1. They have hertz rental on standby for warranty loaner vehicle. I find it spilling that these vehicles come time to be sold. They’re all bad according to the service department. I also find it very frustrating that they park the broken defective vehicles at the very back of the dealer lot to hide the graveyard of 6. 2’s from the public. My vehicle is under 5 year 60k warranty and engine is being replaced, but the tech could not share the extent of what would be replaced. All he mentioned was the block. Zero warning engine just went up like a grenade at 75mpg on the highway. Wife’s vehicle and left me stranded 2 hours from home on a work trip.

Tank had become partially dislodged from the undercarriage. *entire family was in vehicle at time of incident, including three small children. The safety of an entire family along with any others that may have been on the road, if the car would have combusted due to the gas tank which had just been filled to capacity. *vehicle has been at mark christopher gm dealership for over one month. *dealership service dept claims someone tried to steal gas tank. *Mercury insurance company claims mechanical failure. Warning given from vehicle. We heard a dragging noise while we were driving, pulled over as soon as possible. Upon inspection, it was observed that fuel tank had begun to leak fuel from dragging on the freeway.

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.

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

The vehicle experienced a major engine failure involving the 6. 2l engine. The failure appeared sudden and premature and is not consistent with normal wear and tear for a vehicle of this type. Prior to the failure, there were intermittent performance concerns and warning indicators suggesting potential engine or drivetrain issues. The vehicle had previously undergone repair related to similar concerns, indicating a possible recurring problem. The failure created a potential safety risk due to the possibility of loss of power while driving, which could increase the risk of an accident, especially at highway speeds or in traffic. The issue has been confirmed by a service provider, and the vehicle requires significant repair. General motors has been notified but has declined repair assistance, classifying the issue as wear and tear. While no active recall is currently associated with this specific vehicle, similar vehicles with the same engine platform have documented issues, raising concerns about reliability and safety. The failed components are available for inspection upon request.

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).

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.

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'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.

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.

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.

My vehicle fuel pump control module has failed. GMC has an open recall for my year, make and model however claims that my vehicle is not listed on the recall list that came out around 9/15/2025. I contacted GMC and they cannot provide me with a specific reason as to why it’s not included.

Vehicle would not start. Vehicle was towed to GMC dealership for inspection. Vehicle diagnosed with "fuel pump driver control module" issue and needed to be replaced. This was a known issue for the 2021 GMC Yukon: GMC service bulletin: #24-na-139 (release date August 2024) emission recall: n212332040 (release date September 2021) emission recall: n252516900 (release date September 2025) however, this VIN was not covered under the recalls and payment was required out of pocket. Recall(s) need to be expanded to include additional 2021 GMC Yukon vins - including this one.

In January 2021, I purchased a new 2021 GMC Yukon denali from a GMC dealership, which currently has only about 27,000 miles. To date, several recalls have been assigned and completed for my vehicle. Per the websites for GMC and your agency. However, based on published recalls for my vehicle and a repair that is currently underway, I have reason to believe that my vehicle should have been subject to three prior recalls for which it was not [NHTSA id numbers: 20v735000 (front seat bolts), 25v274000 (v8 engine failure, and 21v739000 (fuel power control module] currently, the fuel pump control module is being replaced at a local GMC dealership because it failed last week and left my stranded at home. GMC issued a recall for this in 2021, but my vehicle was not included. Aside from risk and inconvenience, this is also costing my over $300 for a rental. Secondly, though my vehicle's make/model/year is cited in GMC's ongoing engine failure recall, which you are investigating, I have not received a recall notice. I note GMC's financial interest in minimizing vehicle's it recalls for such a costly repair. I have inquired with GMC and two of its dealers and have only received reiterations that my vehicle has not been subject to GMC's recall, which I already knew. I have not been given any explanation for why my Yukon has not been recalled despite my inquiries. Lastly, GMC issued a 2021 recall for front seat bolts; however, I did not receive a notice for my Yukon. I have occasionally felt slight movement in the driver's seat since buying the vehicle. Based on reason and facts, I am alleging that GMC appears to be artificially minimizing recalls and notifications for vehicles that are in fact impacted by defects in their vehicles.

Fuel pump power control module failed while driving. This part was included in a recall in 2021 but our VIN appears to not have been impacted.

Dealership refused to inspect engine and provide new oil in regards to recall, they charged me $208. 75 for oil that was supposed to be completed under recall l87 for gm.

My 2021 Yukon denali (83264 miles), fuel pump control module failed causing car to lock up without any warning as my son was turning vehicle onto a main street. Car would not restart and wasn’t able to be put into neutral to push it to side of road to a safer location. Police came and put cones around it until tow truck came the next morning. Tow operator got it onto a flatbed, which was difficult due to weight of the vehicle and not being able to put into neutral (fortunately it was in 2wd which helped). It scares me to think what would’ve have happened if my son had been on the busy highway that he was planning to be on the next day or when it was on earlier that day. Vehicle is still at the dealership waiting on the replacement part which apparently is hard to get.

My 2021 GMC Yukon xl denali is part of the April 2025 recall for the 6. 2l v8 engine defect. The dealership confirmed the engine must be replaced, but the part is on backorder, potentially for several months. In the meantime, GMC only authorized a GMC acadia as a courtesy vehicle. The acadia is not comparable to our Yukon xl. We are a family of six, and while the acadia has a third row, there is almost no cargo space with it in use. Our Yukon xl has over three times the cargo capacity, which is necessary for safely transporting luggage and sports equipment during our frequent trips (2–3 times per month). Because of this, we have already been forced to rent a larger SUV at our own expense for a recent trip. GMC’s courtesy transportation program states that owners should receive comparable transportation during recall repairs. Despite escalating through the dealership, GMC customer assistance, and even the regional manager, we were denied a comparable loaner or guaranteed rental coverage. This leaves our family in an unsafe and impractical situation while waiting months for the recall repair.

Vehicle: 2021 GMC Yukon denali component: fuel system, gasoline – fuel pump control module incident date: 7-10-2025 mileage 61,263 location: sr 2006 coats, nc summary of complaint: while my wife was pulling out of our neighborhood in our 2021 Yukon denali, the vehicle suddenly shut off while navigating a slight curve. It came to a complete stop in the roadway and could not be restarted. The engine would not crank, and the vehicle could not be shifted into neutral, making it impossible to move out of traffic. The Yukon remained disabled in the roadway for over an hour and ultimately had to be towed. Upon inspection, the dealership mechanic immediately identified the issue without even running diagnostics. He confirmed it was a failed fuel pump control module, which he stated is a common issue with this model. This failure represents a serious safety risk, particularly had it occurred on a high-speed interstate or in dense traffic. A sudden loss of power and inability to move the vehicle can result in dangerous roadside situations or collisions. GMC needs to address this recurring defect before it leads to more severe incidents or injuries. No warning lights or indicators appeared prior to the failure.