2021 GMC Yukon engine problems
158 owner complaints filed with NHTSA name the engine on the 2021 GMC Yukon — 53% of all complaints for this model year.
What owners report
“The contact owns a 2021 GMC Yukon. The contact stated that while driving approximately 50 MPH, the check engine warning light started blinking and the vehicle started shaking violently. The vehicle was pulled over to the side of the road and turned off. The vehicle was then towed to a dealer where…”
filed Jul 31, 2026
“Knocking sound and flashing engine light came on. When brought to dealership it was determined that lower bearing failure took place requiring full engine replacement. '”
filed Jul 25, 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 problems in other Yukon years
| Year | Reports | Share |
|---|---|---|
| 2026 Yukon | 13 | 62% |
| 2025 Yukon | 31 | 63% |
| 2024 Yukon | 58 | 66% |
| 2023 Yukon | 137 | 65% |
| 2022 Yukon | 95 | 58% |
| 2020 Yukon | 10 | 29% |
| 2019 Yukon | 27 | 51% |
| 2018 Yukon | 27 | 39% |
| 2017 Yukon | 33 | 17% |
| 2016 Yukon | 33 | 12% |
| 2015 Yukon | 32 | 6% |
| 2014 Yukon | 8 | 14% |
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.