2020 GMC Yukon power train problems
14 owner complaints filed with NHTSA name the power train on the 2020 GMC Yukon — 41% of all complaints for this model year.
What owners report
“The contact owns a 2020 GMC Yukon. The contact stated that while driving at various speeds, the vehicle jerked and the transmission malfunctioned, causing the wheels to lock up and the check engine warning light to illuminate. The vehicle was driven to a local dealer who diagnosed that the…”
filed Jul 10, 2026
“Complete transmission failure at 82,000 miles. Well maintained vehicle, not used for towing or heavy hauling. Required complete replacement. Traveling at highway speeds and-according to repair facility- valve failure caused transmission to overheat a stripped gears, causing complete failure…”
filed Jul 7, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- A component missing from the drivetrain transfer case may cause the front and/or rear…Campaign 26V289000 · May 7, 2026
Power Train problems in other Yukon years
| Year | Reports | Share |
|---|---|---|
| 2026 Yukon | 7 | 33% |
| 2025 Yukon | 6 | 12% |
| 2024 Yukon | 12 | 14% |
| 2023 Yukon | 36 | 17% |
| 2022 Yukon | 26 | 16% |
| 2021 Yukon | 48 | 16% |
| 2019 Yukon | 12 | 23% |
| 2018 Yukon | 18 | 26% |
| 2017 Yukon | 48 | 24% |
| 2016 Yukon | 34 | 13% |
| 2015 Yukon | 46 | 9% |
| 2014 Yukon | 3 | 5% |
Other reported problem areas on the 2020 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.