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Engine
03/04/2026
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.
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Power Train, engine
04/03/2026
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.
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Engine And Engine Cooling
03/26/2026
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.
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Power Train
03/27/2026
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.
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Engine
03/28/2024
Please see attached letter
