Engine failure at 20,959 miles (GM 6.2L V8). Sudden knocking noise. I heard noise at idle, accelerating, and decelerating. Sounds increased in volume / frequency within a 24hr period and driving it only a few miles. GM dealer verified engine failure and is ordering a replacement under warranty.
2025 GMC Yukon: engine knocking or ticking
6 of the 58 complaints about the 2025 GMC Yukon describe engine knocking or ticking.
- owner complaints
- 6
- of this car's complaints
- 10%
- recalls
- 0
Is there a fix? 23 service bulletins cover this area of the car. See below
Engine knocking or ticking by model year
What owners say
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.
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 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 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
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.
Service bulletins that may apply
- This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer...
- This service bulletin provides information on replacing the intake manifold when the engine is replaced...
- This bulletin advises the tech to inspect deeper into what may be to main
- The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle...
- This service bulletin provides information to dealership personnel for new vehicles with less than 1,000...
- This warranty administration bulletin provides policy information on vehicles outside of a California...
- This bulletin provides information of possible fuel injector harness electrical connector terminal having...
- This bulletin advises the technician to flush the cooling system multiple times if oil has been found in...
Related recalls
No recalls on record for this model year.
Questions about the 2025 GMC Yukon knocking
Is engine knocking or ticking a common problem on the 2025 GMC Yukon?
6 of 58 owner complaints about the 2025 GMC Yukon (10%) mention engine knocking or ticking. The model year with the most reports is 2021.
Is there a recall or service bulletin for this on the 2025 GMC Yukon?
There are 0 recalls and 23 service bulletins for the same area of the car. Check them below with your VIN.
Other symptoms on the 2025 GMC Yukon
Engine failure 23Check engine light 7Won't shift 7Loss of power 6
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