2021 Chevrolet Tahoe engine problems
166 owner complaints filed with NHTSA name the engine on the 2021 Chevrolet Tahoe — 37% of all complaints for this model year.
What owners report
“2021 Chevrolet Tahoe – Unexpected Shutdown/Restart While Stopped On two separate occasions, my 2021 Chevrolet Tahoe has unexpectedly appeared to shut down while I was stopped with my foot on the brake. The vehicle is equipped with Auto Stop/Start, and initially the event seems like a normal Auto…”
filed Sep 15, 2026
“The number 7 DFM lifter failed and is suspected of failing due to the Active Fuel System. The vehicle is currently at the dealership where it was diagnosed and is awaiting replacement parts that are on GMC back order for a month or longer. The vehicle started shaking on 8/25/26 when idle and the…”
filed Sep 14, 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 Tahoe years
| Year | Reports | Share |
|---|---|---|
| 2026 Tahoe | 16 | 67% |
| 2025 Tahoe | 28 | 58% |
| 2024 Tahoe | 22 | 33% |
| 2023 Tahoe | 119 | 55% |
| 2022 Tahoe | 71 | 38% |
| 2020 Tahoe | 12 | 22% |
| 2019 Tahoe | 29 | 28% |
| 2018 Tahoe | 20 | 19% |
| 2017 Tahoe | 26 | 15% |
| 2016 Tahoe | 19 | 7% |
| 2015 Tahoe | 46 | 7% |
| 2014 Tahoe | 2 | 2% |
Other reported problem areas on the 2021 Chevrolet Tahoe
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.