Table 1 shows one common engine and engine cooling related problems of the 2025 GMC Yukon.
| Problem Category | Number of Problems |
|---|---|
| Engine And Engine Cooling problems |
Driving 79 mph total engine seizure. Check engine light came on and seconds later a low oil pressure light and turn off engine. Engine died and went into neutral and had to coast to side of highway in middle of nowhere at 11pm at night.
My engine completely failed on March 19, 2026 and it is currently at sterling GMC in bryan texas waiting for a backorder engine as it needs to be completely replaced.
Engine failure while driving at 60mph that started with a loud knocking sound to eventual engine failure where it wouldnt turn over. Vehicle has 9600 miles and has had issues since day one of leaving lot requiring fuel injector, intake manifold gasket, lifter and rod with last fix being new coil and spark plug that supposedly fixed issue. The most recent engine failure put my family and kids in danager given 100 degree weather in middle of desert on a small highway with very limited cell service. Vehicle provided no warning lights. Vehicle was towed to dealership and I have not received an update. Vehicle has not been inspected by polive or insurance or others.
Im hearing ticking sounds when starting the engine and I reported it to my dealership service department and thay said thay don't see any issue.
Purchased new August 29, 2025 on 12/3/25- mileage 4495. Took vehicle in for first maintenance service. Tire rotation and oil change. On 1/7/26- reported grinding noise we had began noticing when starting vehicle. Engine light service esc. Service traction control. Reported to ben mynatt gm. On 1/8/26 mileage 7120- took Yukon in for service due to grinding noise. Due for 6 module updates and 3 stand alone updates. On 2/16/26 noticed ticking noise when heat in on high. Scheduled service for 2/26. On 2/24/26 smell from car, oil reporting low. Dip stick completely dry. Sent email and photos to ben mynatt service. On 2/26/26 took vehicle in for service. Service advised to start oil consumption test. Ordered blower motor for the squealing noise. Cyl 3 misfire. Was told by the dealer, possibly needs engine 2/27/26 took vehicle in for service check engine light on. Bearing inside blower motor and blower motor replaced. Replaced coil cyl 3 tire rotation 2/28/26 car shaking, smoking, engine light on. Terrible smell from exhaust. Engine light came on, service esc, service traction control, forward collision unavailable, reduced acceleration drive with care alert. GMC alert: service the engine and transmission system immediately alert, engine light on. Vehicle approx miles. Codes misfires to cylinder 3. Took vehicle right to service dept. Codes cleared. Replaced coil on cyl 3 March 7th - mileage 11,200 car shaking vigorously! engine light flashing. Loud knocking coming from vehicle. GMC alert: service the engine and transmission system immediately alert. Emission system- service now. Engine and transmission system service now. Service antilock braking, stabilitrack stability control systems and airbag system. Service air bag system. Emailed to service March 9th. Took vehicle in. Cylinder 3 & 8 misfire code cold start rough idle code. Oil consumption using approx1 qt of oil/500 miles. Vehicle unsafe risk of engine seizure, fire risk and loss of acceleration is extreme danger.
Engine failed, no check engine lights turned on. Needed to have the truck towed to a dealer.
The contact owns a 2025 GMC Yukon. The contact stated that while driving at an undisclosed speed, the vehicle unexpectedly went into limp mode with a limited speed availability message displayed. The vehicle was restarted; however, the failure recurred. The vehicle was taken to the dealer, where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 8,837.
Vehicle went into limp mode while driving on the highway. Onstar said it was the transmission. Checked the oil and smoke was billowing out of the dip stick and there was no oil. None of the sensors indicated that there was low oil. After sitting and waiting for a tow truck rechecked the oil with the dipstick and there was oil in it. Now requires a new engine.
Engine started knocking and developed slow acceleration out of the blue. In addition car has locked up on freeway despite not having any cars around me. Its been in the shop for 3 days and still no diagnosis.
Engine died rattling sound undeer car shaking loss of power.
Warning about reduced acceleration and need for immediate servicing. Dealership reports notice about this issue by using diagnostic codes. Needs engine and turbo charger replaced. Vehicle has only 6500 miles on it.
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.
Engine failure confirmed by dealership. Engine being replaced. Knocking sound and went in to “limp mode” and check engine light. Dealer stated it had issue with crank shaft causing metal in the oil. 5,117 miles at time of failure. 3. 0 l duramax diesel.
My 2025 GMC Yukon at4 ultimate experienced reduced acceleration, and I immediately took it to the dealer. The dealer concluded it was a thrust bearing failure, and gm has authorized a complete engine replacement. I wanted to report this issue, as I believe it represents a potential safety concern. I would like to clarify whether gm has identified the root cause of this problem and redesigned the replacement engine to prevent recurrence. Additionally, I want to be able to track the replacement engine through its serial number for documentation purposes. I am submitting this report to formally document my concern. While gm has acknowledged the thrust bearing issue through a memo #25-na-307, they have not confirmed whether the redesigned replacement engine will prevent this failure from happening again. Please advise. Sincerely, [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
Starting at around 1300 miles, we noticed jerking upon acceleration. We took it into the dealership at 1500 due to a check engine light. They replaced the coil in cylinder 1. Then again at 3200 miles, we took it back in for the jerking sensation. They could not replicate the problem. At 4380 miles, we took it back to the dealer for the same issue. They drove it 580 miles and found the lifter valves in bank 1 to need replacement. The repair was performed and then on Saturday 1/17/2026, the car started giving check engine lights every time we accelerated. It would jerk non stop. The car hesitates during acceleration and feels like someone is pressing on the brake as we are accelerating, causing a jerking motion. Coming from a stop, the car feels like it has a hard time accelerating, almost like it is moving against a hard force to try to come up to speed. The car is at the dealer again today for this issue. It is unsafe to drive due to the hesitation during acceleration.
On November 5, 2025, this 2025 diesel GMC Yukon denali brand new vehicle went into "limp mode" 75 days after purchase with 3,957 miles on the odometer. Vehicle began to decelerate on a busy road. Warning lights went on to indicate that accelerating was no longer possible. Other fast-moving vehicles on the road came very near to the Yukon and quickly passed it/weaved around it, jeopardizing the lives of this Yukon's driver and occupants. At times, the Yukon diesel vehicle would only reach 15 mph. Vehicle eventually driven to nearest gm dealership. The gm dealership service center reported a p06d code and reported that the engine experienced catastrophic engine failure. A new diesel engine has been ordered but is not yet available to the dealership for installation. (the dealership also reports that two other new gm diesel suvs are waiting on new engines due to catastrophic engine failure. ).
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.
While driving on a highway, the vehicle intermittently suffers a sudden loss of engine power during acceleration, accompanied by a flashing check engine light. The most serious event occurred while merging into traffic when the vehicle failed to accelerate normally and briefly lost power, creating a risk of being struck by faster-moving vehicles. Pulling over and restarting temporarily restores normal acceleration, but the problem recurs. The malfunction appears consistent with an engine misfire/powertrain fault. An obd scan has shown misfire-related diagnostic codes (random/multiple misfire and a cylinder-specific misfire). The condition is intermittent and often occurs after approximately 10–45 minutes of driving. The vehicle remains available for inspection. The vehicle has been presented to authorized service departments multiple times. Dealers reported they were unable to duplicate the issue during road testing and no lasting repair has been completed. The manufacturer has been contacted and the vehicle has been evaluated through authorized service channels, but the underlying cause has not been identified. This remains a safety hazard because it reduces acceleration in traffic. Incident list: • 10/25/2025 (~12:25 pm; ~3,108 miles): loss of power while merging; flashing cel; restart temporarily resolved. • 10/27/2025–11/04/2025: intermittent recurrence, usually lasting a few minutes then clearing. • 11/05/2025 (~8:01 am; ~3,641 miles): flashing cel and misfire/loss-of-power symptoms; taken for service. • 11/26/2025 (~10:06 am): another episode consistent with the same pattern. • 12/17/2025 (~8:21 am): another episode, including during travel to a service visit. • ongoing: episodes after ~10–45 minutes; sometimes requires restart to restore drivability. Observed codes: p0300 and p0301. Safety risk: loss of power during acceleration/merging increases risk of rear-end or side-impact collision.
My vehicle, with only 2,400 miles on the odometer, has been diagnosed as requiring a full engine replacement. While driving on the interstate, a warning message appeared indicating reduced acceleration. I was able to exit the freeway safely, but the vehicle could no longer maintain adequate speed to match traffic flow. Prior to this, the check engine light came on, but no issues were reported in the vehicle’s status system. I contacted onstar, and they advised me to take the vehicle to a dealership within seven business days. It has since been at the dealership awaiting parts. Upon further research, I discovered that this issue appears to be widespread. General motors has issued a technical bulletin addressing the problem, which involves complete engine replacement. Additionally, the audio system intermittently emits a loud crashing noise that is startling and potentially dangerous—it has caused me to veer off the road due to its intensity. This issue also seems to affect other 2025–2026 Yukon and tahoe models.
On October 21, 2025, with only 4,197 miles on my Yukon, the vehicle suddenly died while in drive in a parking lot. The vehicle would not restart or shift into neutral. I contacted onstar, who arranged for the vehicle to be towed to the nearest GMC dealership. Since that date, the vehicle has remained at the dealership and has been diagnosed as needing a complete engine replacement due to metal shavings found in the engine. There were no warning lights, messages, or performance issues prior to the failure. This incident was both unsafe and alarming, as the vehicle shut down unexpectedly without any warning while I was driving. I would like to understand how such a major failure could occur on a brand-new vehicle with so few miles.
The 3. 0l diesel motor failed around 5700 miles. The thrust bearing failed and the engine and the turbo needed to be replaced.
I purchased this vehicle in may of 2025. It currently has 9840 miles on it. While driving in October the vehicle shut down and locked up. After getting it towed to a dealer I was told the diesel motor and the fuel system were blow and seized and need to be replace. The vehicle is still currently in north carolina while I live in virginia. Supposedly parts are in for repair for 3 weeks now and I still don't have my vehicle nor any info on when I will get back. Davenport GMC of rocky mount and gm have been rather useless in this process. I cant believe I am going through this with a $90,000 car that was four months old.
Duramax 3. 0l lz0 engine with defective crankshaft thrust bearing caused catastrophic engine failure requiring engine replacement. The event occurred at about 1,000 miles. There is a gm TSB that addresses this issue. This failure displayed all of the symptoms as described in the technical service bulletin (TSB) 25-na-307. The engine has been replaced by gm. There was only one cryptic dashboard message that "acceleration may be reduced", that briefly appeared and then disappeared, three days before the incident. With no check engine light, the mysterious message was chalked up to possibly a def low warning. Def was added. The vehicle displayed no problems during those three days -handling normally. Then while at interstate speeds approximately 90 miles later, the warning that "acceleration is limited" flashed and the vehicle went into limp mode, shortly thereafter the check engine light illuminated. Onstar read the code - p06dd. The email from them stated the recommended action: "service within 7 days. " the following morning the vehicle was presented to a gm dealership service department. Loud "knocking" noises were originating from the rear of the engine compartment at that point in time. The service department reported the engine needed replacement and did so.
Reduced engine power warning light came on at approximately 7600 miles on our new 2025 Yukon xl. Dealer inspected and ultimately decided the engine needs to be replaced due to crankshaft end play out of spec. This is a know gm issue. Incorrect thrust bearing was installed from the factory. Gm did not inform us of this issue. This could have resulted in catastrophic engine failure and cause to be stranded on the road. Not ideal when it is -20 degrees in my hometown. Dealer finally replaced engine then had lane departure unavailable and lane assist unavailable warning lights. Dealer claimed this was unrelated but all safety equipment worked when we dropped it off. Now it doesn’t.
The 6. 2 engine in our 2025 Yukon denali with 3,200 miles just locked up. It needs to be replaced. They said they fixed the problem and it was only affecting 2021 to 2024, but it is carrying over into 2025. They should just buy this vehicle back.
Suddenly went into limp mode on the highway, engine had to be replaced due to bearing failure sending metal through the engine.
I bought a brand new 2025 GMC Yukon at4 3. 0 diesel on 8/16/25 (had 213 miles on). A month later, with only 2000 miles on the vehicle, I was driving down the road and got a warning "reduced acceleration, drive with caution". Car would hardly accelerate. Had it towed to the dealer on 9/22/25. They found metal shavings in the engine oil. Said there was a quarter inch play around the camshaft (manufacture defect). Told me I need a completely new engine. It's now 12/2/25 and I still don't have a car, and mine hasn't been repaired.
I just bought this 2025 GMC Yukon a little over a month ago, and the 6. 2 engine has seized up. This vehicle started making grinding noises and shut down going 60 miles an hour. I traded in my previous Yukon and the dealer has sold it, so now I have nothing to drive. These engines are dangerous, and gm knows this and they don't seem to be doing anything about it.
Brand new engine blew up while driving. It had 2,000 miles on it. It has been replaced but am worried it will happen again.
While driving on the highway, my SUV lost speed and went into what I believe was limp mode and the check engine light came on. I was unable to accelerate quickly which was very dangerous on the highway as I was only able to very slowly go about 45 mph on a 65 mph highway. After the dealer inspected it, I was told I needed a new engine, oil cooler, and turbo. They said it had metal in the oil. My SUV only had 2138 miles at the time of incident.
While traveling on the interstate at 10:30p, 6 hours into a highway trip, the vehicle shuttered violently and lost propulsion and powered systems control. We were traveling at 75 mph on cruise control and immediately had to take evasive action to avoid other vehicles traveling at highway speed as our vehicle rapidly decelerated to a stop. We were barely able to get to the shoulder of the highway before the vehicle came to a complete stop and all dashboard lights illuminated. There was no warning or indication of immanent failure or engine issue. The catastrophic engine failure did not allow for the attempted restart. After opening the engine bay we noted that the coolant reservoir was empty but there was no indication of any leaking fluid in the engine bay or on the ground. The coolant levels were normal at the trip start. We were stranded on the side of the busy interstate for approximately 2 hours awaiting onstar assistance and were forced to exit the vehicle due to its proximity to the edge of an active lane, leaving us exposed and without any protection for 2 hours, in the middle of the night, until assistance arrived. It was a harrowing experience and we are lucky that we were not injured or killed. The vehicle could not be disengaged from park and had to be dragged onto the flatbed. It was taken to the local GMC dealership and left for diagnosis. It was determined that the #2 piston rod broke, smashed valves and sent metal into all engine systems. Bothe the engine and coolant system were replaced. In addition, the torque converter locked up and had to be removed during servicing. All parts were retained by gm.
2025 Yukon denali - purchased in July of 2025 specifically to pull air stream trailer. Vehicle was equipped with necessary tow package for this purpose! #1 problem: went into limp mode, stopped in traffic, towed to dealer. One week to repair and replace fuel system. ( under 700 miles ) #2 problem: went into limp mode while pulling trailer, vehicle lost all the transmission fluid on ground. In shop sixteen days waiting for new transmission parts. ( under 700 miles ) #3 problem: vehicle stopped in traffic, towed to dealer where it was determined it needed new engine. In shop Nov 27, 2025, still in shop as of Jan 14, 2026. No eta on engine or delivery. ( under 2000 miles ) #4 problem: during last failure attempt to use "on star" failed, still not resolved. This vehicle is a danger to the owner and its passengers as well as others when it simply stops working in the middle of a busy highway with a 23' trailer in tow. Not to mention I have $160,000 invested in a car and camper I have yet to be able to use.
At approximately 500 miles, the vehicle started to shutter and misfire at highway speeds (60-70 mph). The check-engine -light began to flash at the same time. We have a video and this happened 3 times before taking it to the dealer. This is a safety concern because it began to lose power on the highway. The issue was confirmed by the dealer and found to be damaged connecting rod bearings. Gm engineers are aware of the vehicle and would not approve the ordering of a new engine by the dealer until the engine was completely torn down to the point of failure.
The contact owns a 2025 GMC Yukon. The contact stated while driving at an undisclosed speed, the vehicle was vibrating abnormally, and the engine seized. No warning light was illuminated. The vehicle was restarted and taken to the dealer to be diagnosed. The contact was informed that there were metal shavings in the oil pan, causing engine failure. The contact was informed that the engine needed to be replaced. The vehicle was being repaired. The manufacturer was made aware of the failure and a case was filed. The contact was advised to contact the NHTSA hotline to report the failure. The failure mileage was approximately 3,000.
We purchased the 2025 GMC Yukon xl on February 26, 2025. While I was heading out on March 24, 2025 I had a total engine failure. No warning sign or warning lamps were present. We had the vehicle towed to hurd auto mall in johnston rhode island where we purchased it. We were told that the engine had seized with only 1,488 miles on it. We saw that over 870,000 GMC engines from 2021-2024 had this same issue and/or have been recalled. We are curious if the 2025 model also have this problem.
Please see attachment:.
I had three 2024 6. 2l engines in my GMC sierra blow up. . . . .