Vehicle profile
GMC Sierra 4WD AT4
Years: 2020–2021Best EPA combined: 24 MPG
Year-by-year
| Year | Trims | Best MPG | Complaints | Fatal crashes | Inventory |
|---|---|---|---|---|---|
| 2020 | 5 | 24 | — | — | — |
| 2021 | 5 | 24 | — | — | — |
Vehicle profile
| Year | Trims | Best MPG | Complaints | Fatal crashes | Inventory |
|---|---|---|---|---|---|
| 2020 | 5 | 24 | — | — | — |
| 2021 | 5 | 24 | — | — | — |