2021 GMC Yukon engine and engine cooling problems
30 owner complaints filed with NHTSA name the engine and engine cooling on the 2021 GMC Yukon — 10% of all complaints for this model year.
What owners report
“The contact owns a 2021 GMC Yukon. The contact stated that while driving at an undisclosed speed, there was a misfire coming from the vehicle, the vehicle was shaking and vibrating abnormally before the vehicle went into LIMP Mode. The traction control light and other unknown warning lights were…”
filed Jul 27, 2026
“The contact owns a 2021 GMC Yukon. The contact stated that while pulling into the yard, the vehicle made an abnormal clanking sound and a hammer-like sound. No warning light was illuminated. The contact stated that the failure was related to NHTSA Campaign Number: 25V274000 (Engine and Engine…”
filed Jun 8, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Connecting rod and/or crankshaft engine components may have manufacturing defects that…Campaign 25V274000 · Apr 24, 2025
Engine and Engine Cooling problems in other Yukon years
| Year | Reports | Share |
|---|---|---|
| 2024 Yukon | 11 | 13% |
| 2023 Yukon | 12 | 6% |
| 2022 Yukon | 12 | 7% |
| 2020 Yukon | 1 | 3% |
| 2019 Yukon | 1 | 2% |
| 2018 Yukon | 1 | 1% |
| 2017 Yukon | 1 | 1% |
| 2015 Yukon | 1 | 0% |
| 2013 Yukon | 1 | 1% |
| 2011 Yukon | 1 | 1% |
| 2009 Yukon | 2 | 2% |
| 2008 Yukon | 2 | 1% |
Other reported problem areas on the 2021 GMC Yukon
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.