Home · 2025 GMC Yukon Denali Xl 1500 · Complaints
These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.
30 of 46 complaints match · Engine · clear filters · page 2 of 2
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
NHTSA ODI 11684385
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.
NHTSA ODI 11681587
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.
NHTSA ODI 11662329
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.
NHTSA ODI 11662039
I had Three 2024 6.2L engines in my GMC Sierra BLOW UP.....
NHTSA ODI 11640164
Working with the data? Download all 46 complaints as CSV · fetched from NHTSA July 25, 2026