2018 GMC Yukon

69 complaints on file, page 1 of 4.

1. Filed May 13, 2026Failure Mar 4, 2026Uniontown, OHEngine

   I started my vehicle and as I accelerated I started to hear a knocking noise. The vehicle and engine have been inspected by the dealership. The problem has also been confirmed by the dealership.There were no warning lights or messages before the knocking noise started.

   NHTSA complaint 11737607
2. Filed Apr 13, 2026Failure Apr 3, 2026Springdale, AREngine, Power train

   The 2018 Yukon has been at the dealership several timeswaiting 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. I don’t understand how this 2018 model apart of the recalls when it’s got the same issues as the newer ones. This is the second Yukon I’ve bought in the last seven years and the other one had the exact same issue.

   NHTSA complaint 11730984
3. Filed Apr 3, 2026Failure Mar 26, 2026128,640 milesBristow, VARadiator assembly

   The contact owns a 2018 GMC Yukon. The contact stated that the vehicle was taken to a local dealer for service, and the contact was informed that the radiator was leaking and needed to be replaced. The contact stated that there were no signs of a leak prior to taking the vehicle for service. The contact was advised by the dealer that it was a common failure for the year and model vehicle. The manufacturer was contacted and offered a buyback. The vehicle was not repaired. The failure mileage was 128,640.

   NHTSA complaint 11729075
4. Filed Mar 29, 2026Failure Mar 27, 2026Plainfield, ILPower train

   I purchased my used GMC YUKON from a used car dealership 3/28/26. I signed the papers for the agreement while I was driving the vechicle home I lost power and it wouldn't go forward with gas applied. The check engine light came on, I pulled the suv over and it was towed. The code that popped up 0700 and 02723 both codes having to do with the transmission.

   NHTSA complaint 11727838
5. Filed Mar 13, 2026Failure Mar 28, 2024Andover, MNEngine

   Please see attached letter

   NHTSA complaint 11724184
6. Filed Mar 10, 2026Failure Jan 18, 2026Bloomfield Hills, MIPower 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.

   NHTSA complaint 11723398
7. Filed Jan 8, 2026Failure Jan 7, 2026Benbrook, TXPower train, Suspension, Vehicle speed control

   As of [XXX] , I witnessed a squealing sound coming from the rear end of my 2018 Denali Yukon XL truck. And it's affecting my braking. And it jerked when I changed my gears on my truck . And there are lights on in my dashboard on my truck. The engine light was blinking on and off and the traction control light was blinking on and off also. But the back driver side of the truck was squealing also. Please help me to resolve this situation. In the name of Jesus. Thanks again [XXX] and [XXX] . INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

   NHTSA complaint 11709565
8. Filed Dec 23, 2025Failure Sep 4, 2025104,000 milesSherwood, AREngine, Power train

   The contact owns a 2018 GMC Yukon. The contact stated after the vehicle was serviced, while driving 30 MPH and depressing accelerator pedal, the vehicle failed to respond. The contact stated that the vehicle hesitated, and the contact shifted to a lower gear to drive to the residence safely. A dealer was contacted. The vehicle was towed to the dealer where it was diagnosed and determined that the transmission needed to be replaced, and that the engine block was damaged. The transmission and engine block were replaced, and the vehicle was repaired. The manufacturer was not made aware of the failure. The failure mileage was 104,000.

   NHTSA complaint 11706830
9. Filed Nov 21, 2025Failure Nov 21, 2025Omaha, NEEngine, Suspension

   Air conditioner condenser faulty and had to repaired. Premium Ride Shocks faulty and had to be repaired. Lifters and bent pushrod faulty and had to be repaired. Vehicle currently has approximately 70,000 miles. These are all known issues by GM and very expensive to fix and no recalls.

   NHTSA complaint 11700880
10. Filed Oct 28, 2025Failure May 10, 2025Grand Rapids, MIEngine

    What component or system failed or malfunctioned, and is it available for inspection upon request? Engine failure due to lifter failure and bent push rod and needed cam replaced. It is available for inspection. How was your safety or the safety of others put at risk? Could have been catastrophic if I didn't bring in for repair if the engine failed completely while driving. Has the problem been reproduced or confirmed by a dealer or independent service center? YES Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Yes, May 10th.

    NHTSA complaint 11695994
11. Filed Oct 9, 2025Failure Jun 2, 2025Upper Marlboro, MDPower train

    Dealership did a tune-up in June 2025 and had my truck for 2 weeks, no issues with transmission discovered or discussed. Now in September 2025, 2018 GMC Yukon has developed a torque converter shutter when driving between 40 and 50 mph. I took the vehicle to an independent shop who told me they had some computer tool to manually control the transmission, and there is an internal failure. There was a transmission flush completed hoping to gain results, however it was very short lived.

    NHTSA complaint 11692390
12. Filed Oct 5, 2025Failure Sep 16, 2025Madisonville, TNEngine

    I was driving on I75 North, just North of Chattanooga. I was in the Center Lane. I lost all power to the vehicle. The engine stopped. I had no power steering, no power brakes, and was in heavy traffic. I managed to shift lanes and get it to the shoulder of the road. The vehicle was towed in. Diaganostics were completed by a certified mechanic. The engine had seized. GM has several recalls on this issue. 2018 is not included. However, this is the exact same issue that is happening with 2019 and up. That were recalled. I urge you to order an extended recall to include 2018 vehicles as well before someone gets killed.

    NHTSA complaint 11691429
13. Filed Sep 22, 2025Failure Sep 3, 2025Oklahoma City, OKEngine

    My 2018 GMC Yukon blew an engine with only 81,000 miles. Had four shops including (2 GM dealerships) look at the vehicle, pictures, and findings and concluded the engine had blown. The vehicle had began running very rough while driving down the road at 45mph. The CEL showed a misfire in cylinder one. The spark plug was pulled and soaked in oil. A borescope was put down the hole and found oil pooled on top of the piston. The engine has blow by the piston rings and the cylinder wall was scorn. Four shops. Four results. New engine needed. A quick google search of the engine (L83) showed multiple open class action lawsuits for this exact situation. The cause of the problem is the active fuel management system that GM created. When I contacted GM for assistance at the recommendation of the dealerships (which they have seen an increase in these engine blowing with low miles) I was informed by GM/GMC that they would look into it and could not guarantee assistance. Fast forward a couple of days I was contacted and made perfectly aware that I was 991 days outside and 21,000 miles out of warranty but they would offer “assistance” in the amount of 10% of the total cost. Four shops, four quotes for an engine replacement ranging from $14,750-$17,000 and GM was only offering $1,475-$1,700. Absolutely terrible. With multiple open class action lawsuits, stop sales, and well documented issues. I expressed disappointment and requested assistance to prevent having to seek litigation. I was told “if that’s what you want to do, you will need to talk to our legal department” and told there’s nothing they can do. Will not buy nor recommend anyone buy a GM product. They don’t respect or care for their customers.

    NHTSA complaint 11688970
14. Filed Sep 15, 2025Failure Aug 13, 2025Caddo mills, TXUnknown or other

    All back light won’t turn on only brake lights but not night time running lights

    NHTSA complaint 11687301
15. Filed Sep 5, 2025Failure Aug 5, 2025Shaker Heights, OHEngine

    driving the vehicle on a regular city street when the flashing engine light came on out of nowhere. immediately pulled off and had the vehicle towed to my dealership. result of the inspection, i have to replace my engine. as soon as i started researching the issue it is clear that this truck should be part of the GM recall. it is a known issue that GM slow played for years, but as of now this vehicle is not part of the recall. it is the same engine and failure mode as the 600,000 unit recall, but mine isn't covered by the recall leaving me responsible for their known and documented manufacturing issues

    NHTSA complaint 11685295
16. Filed Aug 18, 2025Failure Apr 11, 2025Manchester, CTEngine

    Vehicle (engine) shut off while driving on highway. Would not restart. Had vehicle towed from highway to repair shop. No check engine light ever came on. The engine was replaced and old one had to be returned in order to avoid paying a $5,000 core charge. I found out after replacing the engine that GM issued a recall but I read it starts with 2019 models and only reimbursement for original owners. I purchased this vehicle from a GM dealership in CT (Scranton of Vernon) in 2022 with approx 52,000 miles.

    NHTSA complaint 11681398
17. Filed Jul 30, 2025Failure Dec 1, 2024Sacramento, CAEngine, Fuel/propulsion system, Service brakes

    ENGINE WORK VALVE INTAKE LIFTER AND CAMSHAFT REPAIRS / OIL SENSOR HAS BEEN GOING HAYWIRE / REAR STRUTS KEEP POPPING OFF AND AFTER STRUTS REPAIRED BOUGHT THE TRUCK 05/2024 AND HAD TO TAKE TO REPAIR 12/2024 AND ONCE MONTH EVER SINCE.

    NHTSA complaint 11677371
18. Filed Jul 10, 2025Failure Jun 1, 2025Lindenhurst, ILEngine

    Has lifter chattering / camshaft issues as a result of manufacture defect that so many people are complaining about from the research I have done

    NHTSA complaint 11672396
19. Filed Jul 1, 2025Failure Jun 14, 2025Milton, DEPower train

    My 2018 GMC Yukon SLE has a Transmission Failure and a engine oil coolant failure. The issues occurred while driving when the vehicle had to go into limp status to prevent the transmission from complete failure. I have taken the vehicle to the dealership 2x and they changed the fluid once and replaced the thermostat the second time. Neither case fixed the vehicle, it is currently in the shop for transmission and radiator w/ engine oil cooler replacement - $8200 The vehicle has been inspected by Aamco of Dover, DE and is awaiting inspection by warranty company 3rd party inspector. There are no warnings before the system is overheated and goes into limp status and at that point an alarm sounds in the car.

    NHTSA complaint 11670575
20. Filed Jun 20, 2025Failure Jan 15, 2025101,000 milesFlorissant, MOPower train

    The contact owns a 2018 GMC Yukon. The contact stated that the message "Transmission Hot - Idle Engine" was intermittently displayed. The vehicle was taken to the dealer, where the TCM was reprogrammed, and the thermostat and the water pump were replaced; however, the failure persisted. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 101,000.

    NHTSA complaint 11668152