2021 Gmc Yukon xl

Vehicle is equipped with the 6.2L L87 V8 engine. Prior to receiving the dealer service for Recall 25V-274, the vehicle experienced a distinct highway vibration, powertrain shudder, and fluctuating/jumping RPMs on the highway. The dealer subsequently performed the recall remedy by updating the vehicle to the thicker 0W-40 oil specification. However, the underlying transmission torque converter had already suffered catastrophic failure due to the powertrain stress/shudder and required a complete transmission replacement at 84,000 miles. I am reporting this because the initial 6.2L engine defect and subsequent recall remedy overlap heavily with severe powertrain and torque converter failures at low mileage

Our 2021 YukonXL started running rough and the check engine light came on. We took it to the shop the next day and was told there was complete lifter failure and that we need a new engine.

the engine started knocking and vehicle shaking while on interstate. vehicle was towed to service center and they determined that one valve was stuck and another one turned 90 degrees and the cam shaft was also ruined. It was required to replace the engine as that was a less costly option than replacing the damaged parts. A dash light came on and was flashing while my daughter was driving it to [XXX]. The vehicle was towed from the parking lot they were at when reaching [XXX]. Unsure of where the engine went to after the service center removed it, but I think they had to send it back to GM. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I have a 6.2L that we took in with bad rods due to the cam. The fixed the motor and now it is consuming oil and GM says it is normal. Normal for an engine to consume quarts of oil?? I cannot trade out of the vehicle because of the extreme depreciation that these vehicles have incurred due to the known engine issues. I know others are having the same issues I just want GM to make this right and help loyal customers.

Lifter/camshaft/engine failure. GM knows this is an issue with these models/years. They only want to cover half of the repair sticking me with a bill for $5600. Safety is a concern because they know this is an issue and not issuing a recall currently. I waS driving when this happened which could have caused me to get into an accident. Very dangerous. Car is currently as GMC Started by showing low oil in between oil changes last year. Went in for an oil change and told them about it. Dealership told me it was the air hose box and that they didn't see any other issue. I believe they are told to lie to get each customer further out of warranty. I was driving and all of a sudden the car started violently shaking and lights started flashing at me.

Driving on the freeway the engine started making super loud knocking noises for while going 70mph . Then it immediately died everything turned off no power I was barely able to get it off the freeway while coasting. And my husband tried to push it off the road more but when it dies we are not able to put the car in neutral !! It’s a push button gear shift ! When there’s no power the buttons don’t work!! It was 105 degrees out that day in Sacramento , the car had zero power the battery is not the problem . The motor is blown and the car hasn’t started since that day. These cars are dangerous to just die in the middle of the freeway! The motor has already been replaced in Feb 2026, we bought it in march of 2026 with 57k miles on it. I added about 12k miles and the motor blew up again!

My 2021 GMC Yukon Denali features the 6.2L L87 V8 engine. This vehicle was previously serviced for the GM voluntary recall regarding engine bearing failures, and the dealership completed the remedy by inspecting the motor and changing the oil to the thicker 0W-40 specification. Since completing this recall fix, the vehicle has developed an intermittent rough idle and sputtering behavior. The dealership has been unable to duplicate the intermittent issue and claims it falls under normal behavior. I am filing this report because my vehicle is exhibiting post-recall remedy engine degradation, matching the exact failure patterns outlined in the NHTSA Engineering Analysis EA26005 escalated on August 20, 2026. This intermittent sputter represents a severe safety hazard regarding potential sudden loss of motive power while driving.

2022 GMC Yukon XL suffered catastrophic transmission failure at approximately 87,000 miles. An ASE-certified transmission repair facility determined that the torque converter failed, resulting in transmission damage requiring over $7,000 in repairs. GM declined any assistance solely because the repair was performed by an independent ASE-certified facility. I am concerned that a major transmission component failure at this mileage may represent a broader defect, particularly given transmission-related service bulletins and NHTSA Recall 26V085 affecting certain 2022 Yukon XL vehicles.

Engine failed. Had to be towed to the dealer to get a new motor. It was part of the 6.2l L87 recall

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.

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.

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 is: 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), 5 U.S.C. 552(B)(6)

Burning oil too much too fast oil all over motor and engine and white smoke inside the car all records are with GMC DEALER

Engine seized while driving on the highway. This is the same engine that is being recalled and GM has said that the vin is not covered. The vehicle stopped running on a major highway with my [XXX] old son in the car. The dealership is saying this is the exact issue that is part of the larger investigation for GM v8 engines. There were no warning lights at all prior to the engine seizing. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2021 GMC Yukon XL. The contact stated that while driving 55 MPH, several unknown warning lights illuminated, and the check engine warning light started blinking. The contact pulled over and became aware that the vehicle was shaking. The vehicle was turned off and restarted; however, the failure persisted, with smoke coming from the vehicle. The vehicle was repaired under NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING); but the repair failed to fix the vehicle. The vehicle was taken to the dealer, where it was diagnosed, and it was determined that the camshaft needed to be replaced and that cylinder #8 was damaged and had detached. The manufacturer was notified of the failure. The failure mileage was 116,204.

This is from dealership “found customers concern of engine light is on and ticking noise found cylinder 4 lifters to be collapsed causing the exhaust gasses to be trapped in the cylinder causing the cylinder wall to dry out and leaving scratches on the cylinder wall recommend replacing motor due to this problem at this time”

The infotainment screen on my 2021 GMC Yukon was previously replaced at the GMC dealership, and this will be my second replacement. It has now cracked even though there was only very light contact. This doesn’t seem like normal wear and tear. I’d really appreciate it if the screen could be inspected, as I suspect there might be a manufacturing issue with these screens. I’m quite concerned about this problem because it almost caused injury to my six-year-old. Please understand my worries, I’m sure many other parents are facing similar concerns with these screens. The cracked glass can be dangerous, especially for families with children.

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

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.

Issue Description: The vehicle experienced a failure of the Dynamic Fuel Management (DFM) system, resulting in a collapsed lifter. This caused a cylinder misfire and a sudden loss of engine power while driving at highway speeds. Safety Concern: While traveling at highway speeds, the sudden misfire and loss of power created a dangerous condition. The vehicle could not maintain speed or accelerate properly with surrounding traffic, significantly increasing the risk of a collision. Failure Details: The issue was diagnosed as a collapsed lifter related to the DFM system. This caused persistent misfiring, rough engine operation, and severe drivability issues. Repair Outcome: Due to the extent of internal engine damage caused by the lifter failure, the vehicle required complete engine replacement.