2021 GMC Yukon electrical system problems
26 owner complaints filed with NHTSA name the electrical system on the 2021 GMC Yukon — 9% of all complaints for this model year.
What owners report
“The driver's seat inboard airbag assembly and internal structural wiring harness failed due to a direct short circuit, completely deactivating the vehicle's supplemental restraint system. General Motors has a known engineering bulletin for this issue (#23-NA-085), noting that sharp internal seat…”
filed Jun 23, 2026
“The contact owns a 2021 GMC Yukon. The contact stated that while driving approximately driving 45 MPH and turning onto an exit the vehicle suddenly reduce speed and lost power and the message "Press Start" had displayed. The contact stopped the vehicle and eventually restarted the engine and the…”
filed Jun 3, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Electrical System problems in other Yukon years
| Year | Reports | Share |
|---|---|---|
| 2026 Yukon | 2 | 10% |
| 2025 Yukon | 8 | 16% |
| 2024 Yukon | 15 | 17% |
| 2023 Yukon | 24 | 11% |
| 2022 Yukon | 30 | 18% |
| 2020 Yukon | 2 | 6% |
| 2019 Yukon | 9 | 17% |
| 2018 Yukon | 3 | 4% |
| 2017 Yukon | 21 | 11% |
| 2016 Yukon | 53 | 20% |
| 2015 Yukon | 79 | 15% |
| 2014 Yukon | 5 | 9% |
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.