GMC Yukon Complaints

6,462 consumer complaints on file.

#11725322March 18, 2026
ENGINE, POWER TRAIN
2019 GMC Youkon with 94,659 miles. I am the second owner of this vehicle. I purchased it used in February 2025. Check engine light came on in route to work on March 5, 2026. Immediately took vehicle to Auto Zone to scan for codes. Multiple codes were returned. I drove it directly to a repair shop for further diagnostics. Return Results were massive lifter failure and cam shaft damage. Why would the check engine light not come on sooner to prevent TOTAL FAILURE. Vehicle was towed to a GMC certified mechanic where it was confirmed that all Lifters and cam shaft were damaged beyond repair and must all be replaced. Estimated Cost of repairs so far: $8,596.80 Labor: Remove & Replace Left And Right Valve Lifter (Both Sides) Coolant Service Oil Change Labor Parts: Engine Camshaft 1 , Genuine GM Engine Valve Lifter Oil Manifold Gasket 1 , Genuine GM Fuel Pump Gasket 1 Engine Timing Cover Gasket Set 1 Engine Valve Lifter Guide 1 Engine Valve Lifter Guide 1 Coolant/Antifreeze Orange Dex-Cool 1 Gal 3 Engine Push Rod 8 Engine Oil Filter 1 0W-20 Full Syn 8 Engine Cylinder Head Bolt Set 1 Engine Valve Lifter Guide 1 Engine Valve Lifter Guide 1 Stock Engine Valve Lifter 4 Stock Engine Valve Lifter 4 Engine Cylinder Head Gasket Kit 1 Engine Cylinder Head Bolt 10 APPROVED Subtotal $8,422.71 + est. Tax $174.09 $8,596.80 Estimated time for repair: going on three weeks
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11725410March 18, 2026
POWER TRAIN, ENGINE, ELECTRICAL SYSTEM
On 3/3/2026 during the night-time hours, I was traveling on the freeway in my 2023 GMC Yukon at over 65 MPH when I received a notice from the instrument cluster stating that the battery was low and oil pressure was low. Before I could pull over to a safe location, the Yukon turned off while in motion. My wife and two children were in the vehicle. The Yukon stalled in the number one lane of the off-ramp. I had to remove my children and wife from the vehicle while in the roadway on busy throughfares and in darkness. I attempted to jumpstart the Yukon, but efforts were unsuccessful. The Yukon was towed to the dealership where I purchased it purchased from. The Yukon was returned to my custody on 3/10/2026 stating it was an issue with the battery. While driving the Yukon home it began to bog down and stalled out in-front of my residence as it was being driven by my wife. After arriving home (night-time), I went to check the Yukon, and it started with no issues. I drove the Yukon to see if the errors would occur again. While driving the Yukon on the freeway, the Yukon RMPs indicated close to redline and I received a notification from the instrument cluster stating to turn the vehicle off (traveling at about 70-75 MPH). Once again, I was unable to pull off to a safe location before the Yukon turned off on its own while still in motion; I attempted to jumpstart the Yukon but attempts were unsuccessful. The Yukon was towed again to dealership. On 3/11/2026 I was advised that the engine had seized and on 3/13/2026 I was advised by GMC the engine needed to be replaced (this was covered under powertrain warranty). The approximate milage of the vehicle is at about 42,200.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724975March 17, 2026
ENGINE, POWER TRAIN
The 2020 Yukon started to have serious loss of speed and decelerating issue when the vehicle would slow down and down shift to a lower gear. The issue with this is that once it downshifted it woul not engage in a gear again and leave me stranded on the road. I had to turn off the car and restart it for it to reengage in a gear enough to get it moving again and sometimes I had to try more than once to get it moving once it no longer wanted to engage in a gear. So in the 10 mile drive, I was left stranded at least 15 times. Each time I had to restart and restart again for the vehicle to engage in a lower gear. Once moving, it would sometimes it would engage in a higher gear and sometimes it would not. Thank goodness I wasn't traveling on the highway when this happened. Beware to anyone if this was to happen on the highway while in the middle lane while in traffic. And the check engine light never turned on and thus no code to help detect the issue. Took it the day before to have it looked at and was told nothing was wrong with it since there was a code and they could not duplicate the issue I described. WHAT?? They reset some transmission computer setting but it only made it worse by the next day. Now this 6 yr on 2020 GM Yukon is at the dealership service department requiring a new transmission for $7200. Said that the transmission fluid was showing particles of stuff and color was 'burnt', I think. Transmission fluid was changed at it's regular check up time so that didn't cause the issue and nor should it have bits and pieces in it and discolored. Is there any recourse to GM and it's crappy transmissions??
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724633March 16, 2026
SUSPENSION
Vehicle been in the shop 3 times. [XXX] suspension light repeat come on. Working with warranty company. Light came on again 3 more times after Vehicle left the shop INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724749March 16, 2026
ENGINE, FUEL/PROPULSION SYSTEM, POWER TRAIN
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724693March 16, 2026
FORWARD COLLISION AVOIDANCE: WARNINGS, AIR BAGS, ENGINE
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
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724636March 16, 2026
ENGINE, POWER TRAIN, FUEL/PROPULSION SYSTEM
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724498March 15, 2026
POWER TRAIN
I was pulling out of my driveway when I noticed that my mailbox was blown open from a recent storm. I stopped and put it in reverse (well tried to) but the vehicle would not shift. Quickly I continued to drive to make a u-turn instead and at that point my vehicle would not drive normally. The rpms would not go up despite pressing the gas and the engine was reving very high.gm dealer said $700 to pull the transmission to determine the issue, but after my research I’m certain it’s the valve failure in the transmission just as it’s done the same to others. Why is this transmission not recalled, but the disel engines on the same model are? Seems as though it is a similar issue. I’m afraid to see what they will charge me as my vehicle has 76,000 miles and I’m told is outside warranty coverage.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724451March 15, 2026
POWER TRAIN, ENGINE
I just survived a terrifying incident that proves the current GM 6.2L (L87) engine "recall fix" is a dangerous myth. Living with the "Ticking Time Bomb" I bought my 2023 GMC Yukon AT4 brand new, but for the last two years, I haven't truly "owned" it—it has owned me. Every long-distance trip with my family was filled with anxiety. I constantly worried that I’d be the next one stranded on the side of the road while my neighbors' and friends' 6.2L engines were seizing all around me. I traveled with fear that I’d be coming home in a rental car. The False Security of the Recall When the recall finally arrived, I thought the nightmare was over. On Sept 15, 2025, my dealer in Newburgh, NY, inspected the truck at 48,000 miles. They told me my engine "passed," switched the oil to 0W-40, and issued me a 150,000-mile extended warranty. I realized then what I know for sure now: 0W-40 oil is a band-aid, not a cure. GM used thicker oil to "cushion" a physical manufacturing defect in the crankshaft and bearings just to avoid the multi-billion dollar cost of engine replacements. They traded my family’s safety for their bottom line. The Catastrophic Failure Last Friday, March 13, 2026, the "fix" failed. I was traveling 70 mph uphill on I-84 with my **newborn baby** and two other kids in the back. Without warning, the engine seized solid. I lost all propulsion in heavy traffic and had to fight to get my children to the shoulder. We sat in the freezing cold for over an hour while traffic flew by us. An extended warranty is worthless when your engine dies in a high-speed traffic lane with an infant in the car.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724184March 13, 2026
ENGINE
Please see attached letter
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11723837March 12, 2026
SERVICE BRAKES, ELECTRICAL SYSTEM, ENGINE
Vehicle shut-off while driving on the expressway, around 70-75mph. Upon vehicle turning off, I had no option but to "coast" off to the left side, which thankfully, freed me from traffic for the most part. If anyone who have been a foot over, they would've hit me. I have had numerous electrical issues with this vehicle and have taken it to the dealership but they have been "unable" to duplicate the issue. Vehicle was immediately taken to the dealership (and they still have as of this incident report submission). They told me last night that they will keep it again today and test drive it again to see if they can get it to do anything but if it doesn't show anything new, they have nothing to diagnose and will give me my car back. After requesting a copy of repair orders and a list of the history codes in my car, I am beside myself that anyone thinks giving me this vehicle back to drive is ok. See the history code report in documents uploaded. These are MAJOR safety failures in a large vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11723737March 11, 2026
SUSPENSION
The suspension service lights repeatedly coming on.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11723577March 11, 2026
ENGINE
On September 4, 2025, I brought my 2023 GMC Yukon Denali in for the product safety recall regarding the engine. My engine passed the recall inspection and I was given an oil change with high grade synthetic oil. This past Saturday, March 7, 2026 as I was driving in Tampa Florida with my [XXX] son, my Yukon experienced catastrophic engine failure and I lost all propulsion control. The car went into neutral and I pulled along the side of the road safely to avoid an accident. As I put my car into park, the engine shut off completely and would not turn on again. There was no clicking sound and no attempting to turn over. I contacted roadside assistance and they sent a towing company to bring my Yukon to Century Buick GMC in Tampa Florida. The symptoms of what happened are similar to those of the recall. The dealership is replacing the engine however this is a critical safety issue as my son and I could have been severely hurt and or killed. Please investigate. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11723398March 10, 2026
POWER TRAIN
The 2018 Yukon Denali has been at the dealership for 7 weeks waiting for a valve body for the transmission. There are valve body recalls for other year GM vehicles with the same transmission, but not for the 2018 model even though it appears to be the same part number. The transmission was already replaced on this vehicle at 500 miles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11723372March 10, 2026
ENGINE, BACK OVER PREVENTION: WARNINGS, FORWARD COLLISION AVOIDANCE: WARNINGS
We were driving on the highway when the service lights came on along with the check engine light started flashing. The truck sounded like it hesitated a little, but the lights turned off and it drove his normal. We exited the freeway as we were close to home came home, parked it turned it off and turned it back on to test it, and it hesitated to turn on so we took it straight to the dealership where they repeated the issue. We left it there. They did not call me so I went up to the dealership the following day to check on this and I had not heard from them they told me why they were on the test drive that the engine had locked up. My vehicle was a part of the initial recall. They told me that it passed the inspection and they changed the oil to the new oil that was required and now at 12,000 miles my engine has failed
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11722970March 9, 2026
ENGINE
The engine started a soft, cyclic tapping sound intermittently on 2/28/26 while I was out of town on a trip. No alerts showed on the GM systems app. On 3/1, while driving home from the trip, the car started hard braking at cruising speed and the engine died and would not restart. I had the car towed to the closest GM dealership and have been told the engine locked up. I just rolled 6000 miles and showed 18% oil life from the original engine oil it came with from the factory. I had been watching the engine problems for years now and waiting for them to be resolved before buying a new GM; only to be lied to that the issue was resolved. Now they're going to install yet another defective engine.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11722705March 7, 2026
ENGINE
At 27, 000 miles while on vacation, over 1000 miles from home, the lifters and bearings grenaded the motor. The vehicle sat at the dealership for a month waiting for a motor replacement. This could have been much worse as we had just driven through mountains the day before. Had this happened in the mountains this could have been deadly. The engine was replaced, but we have no faith in the new engine as these are failing also. This is unacceptable for any vehicle, let alone an $85,000 Yukon. We have also had several issues with water leaking in from the sunroof also. Gm's solution to me basically missing 3 and a half days of a 7 day vacation was to give me enough gm points to get a free oil change. The dealership was great to deal with, the people I dealt with at GM were not very helpful at all.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11722657March 7, 2026
ENGINE
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11722542March 6, 2026
ENGINE
TRANSMISSIONS ISSUES. Not transitioning/ shifting into gears smoothly or at all. When it does transition/shift it is rough and harsh. When my car transitions to a lower gear then it will not transition back up to a higher gear causing my vehicle to drop speed significantly that I am a safety hazard on the road. Example: when it shifts to a gear high enough that the vehicle can reach 40 mph and there is a need to decelerate it does but once it drop to lower gears it cannot engage again to a higher gear leaving me stuck going at most 10 mph with not opportunity to excelerate in traffic to a higher speed. The transmission control module (TCM) software was updated with no improvement.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11722482March 6, 2026
ENGINE, UNKNOWN OR OTHER, FUEL/PROPULSION SYSTEM
Exhaust fumes and stink on cold start . vehicle only has 40,000 mi and I have exhaust smells coming in through hvac system!!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

← Back to GMC Yukon