GMC Sierra Drivetrain (FWD/RWD/AWD/4WD)
The 2026 GMC Sierra is available in 4-Wheel Drive, Rear-Wheel Drive drivetrain configurations.
Latest model year (2026):
The GMC Sierra is offered in 4-Wheel Drive, Rear-Wheel Drive configurations, depending on trim.
GMC Sierra Drivetrain — All Years
| Year | Trim | Drive | Transmission | Engine | MPG Comb. |
|---|---|---|---|---|---|
| 2026Config 1 of 24 | Auto (A1) | 4-Wheel Drive | Automatic (A1) | — | 64 |
| 2026Config 2 of 24 | Auto (A1) | 4-Wheel Drive | Automatic (A1) | — | 67 |
| 2026Config 3 of 24 | Auto (A1) | 4-Wheel Drive | Automatic (A1) | — | 68 |
| 2026Config 4 of 24 | Auto 10-spd, 6 cyl, 3.0 L | 4-Wheel Drive | Automatic 10-spd | 6 3.0L | 23 |
| 2026Config 5 of 24 | Auto 10-spd, 6 cyl, 3.0 L | 4-Wheel Drive | Automatic 10-spd | 6 3.0L | 19 |
| 2026Config 6 of 24 | Auto 10-spd, 6 cyl, 3.0 L | 4-Wheel Drive | Automatic 10-spd | 6 3.0L | 24 |
| 2026Config 7 of 24 | Auto 10-spd, 6 cyl, 3.0 L | Rear-Wheel Drive | Automatic 10-spd | 6 3.0L | 25 |
| 2026Config 8 of 24 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 17 |
| 2026Config 9 of 24 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 17 |
| 2026Config 10 of 24 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 18 |
| 2026Config 11 of 24 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 17 |
| 2026Config 12 of 24 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 15 |
| 2026Config 13 of 24 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2026Config 14 of 24 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2026Config 15 of 24 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2026Config 16 of 24 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2026Config 17 of 24 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 15 |
| 2026Config 18 of 24 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 15 |
| 2026Config 19 of 24 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 16 |
| 2026Config 20 of 24 | Auto 8-spd, 4 cyl, 2.7 L | 4-Wheel Drive | Automatic 8-spd | 4 2.7L | 17 |
| 2026Config 21 of 24 | Auto 8-spd, 4 cyl, 2.7 L | 4-Wheel Drive | Automatic 8-spd | 4 2.7L | 18 |
| 2026Config 22 of 24 | Auto 8-spd, 4 cyl, 2.7 L | 4-Wheel Drive | Automatic 8-spd | 4 2.7L | 17 |
| 2026Config 23 of 24 | Auto 8-spd, 4 cyl, 2.7 L | Rear-Wheel Drive | Automatic 8-spd | 4 2.7L | 19 |
| 2026Config 24 of 24 | Auto 8-spd, 4 cyl, 2.7 L | Rear-Wheel Drive | Automatic 8-spd | 4 2.7L | 20 |
| 2025Config 1 of 23 | Auto (A1) | 4-Wheel Drive | Automatic (A1) | — | 64 |
| 2025Config 2 of 23 | Auto 10-spd, 6 cyl, 3.0 L | 4-Wheel Drive | Automatic 10-spd | 6 3.0L | 23 |
| 2025Config 3 of 23 | Auto 10-spd, 6 cyl, 3.0 L | Rear-Wheel Drive | Automatic 10-spd | 6 3.0L | 26 |
| 2025Config 4 of 23 | Auto 10-spd, 6 cyl, 3.0 L | 4-Wheel Drive | Automatic 10-spd | 6 3.0L | 24 |
| 2025Config 5 of 23 | Auto 10-spd, 6 cyl, 3.0 L | 4-Wheel Drive | Automatic 10-spd | 6 3.0L | 19 |
| 2025Config 6 of 23 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 15 |
| 2025Config 7 of 23 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2025Config 8 of 23 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 17 |
| 2025Config 9 of 23 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2025Config 10 of 23 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 17 |
| 2025Config 11 of 23 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2025Config 12 of 23 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2025Config 13 of 23 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 18 |
| 2025Config 14 of 23 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 17 |
| 2025Config 15 of 23 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 17 |
| 2025Config 16 of 23 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 15 |
| 2025Config 17 of 23 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 15 |
| 2025Config 18 of 23 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 16 |
| 2025Config 19 of 23 | Auto 8-spd, 4 cyl, 2.7 L | 4-Wheel Drive | Automatic 8-spd | 4 2.7L | 18 |
| 2025Config 20 of 23 | Auto 8-spd, 4 cyl, 2.7 L | Rear-Wheel Drive | Automatic 8-spd | 4 2.7L | 19 |
| 2025Config 21 of 23 | Auto 8-spd, 4 cyl, 2.7 L | 4-Wheel Drive | Automatic 8-spd | 4 2.7L | 16 |
| 2025Config 22 of 23 | Auto 8-spd, 4 cyl, 2.7 L | Rear-Wheel Drive | Automatic 8-spd | 4 2.7L | 19 |
| 2025Config 23 of 23 | Auto 8-spd, 4 cyl, 2.7 L | 4-Wheel Drive | Automatic 8-spd | 4 2.7L | 17 |
| 2024Config 1 of 24 | Auto 10-spd, 6 cyl, 3.0 L | Rear-Wheel Drive | Automatic 10-spd | 6 3.0L | 25 |
| 2024Config 2 of 24 | Auto 10-spd, 6 cyl, 3.0 L | 4-Wheel Drive | Automatic 10-spd | 6 3.0L | 24 |
| 2024Config 3 of 24 | Auto 10-spd, 6 cyl, 3.0 L | 4-Wheel Drive | Automatic 10-spd | 6 3.0L | 19 |
| 2024Config 4 of 24 | Auto 10-spd, 6 cyl, 3.0 L | 4-Wheel Drive | Automatic 10-spd | 6 3.0L | 22 |
| 2024Config 5 of 24 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 17 |
| 2024Config 6 of 24 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 18 |
| 2024Config 7 of 24 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 15 |
| 2024Config 8 of 24 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 15 |
| 2024Config 9 of 24 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2024Config 10 of 24 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 18 |
| 2024Config 11 of 24 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2024Config 12 of 24 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 18 |
| 2024Config 13 of 24 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 17 |
| 2024Config 14 of 24 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2024Config 15 of 24 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 17 |
| 2024Config 16 of 24 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2024Config 17 of 24 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 15 |
| 2024Config 18 of 24 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 15 |
| 2024Config 19 of 24 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 16 |
| 2024Config 20 of 24 | Auto 8-spd, 4 cyl, 2.7 L | Rear-Wheel Drive | Automatic 8-spd | 4 2.7L | 19 |
| 2024Config 21 of 24 | Auto 8-spd, 4 cyl, 2.7 L | 4-Wheel Drive | Automatic 8-spd | 4 2.7L | 16 |
| 2024Config 22 of 24 | Auto 8-spd, 4 cyl, 2.7 L | 4-Wheel Drive | Automatic 8-spd | 4 2.7L | 18 |
| 2024Config 23 of 24 | Auto 8-spd, 4 cyl, 2.7 L | 4-Wheel Drive | Automatic 8-spd | 4 2.7L | 17 |
| 2024Config 24 of 24 | Auto 8-spd, 4 cyl, 2.7 L | Rear-Wheel Drive | Automatic 8-spd | 4 2.7L | 20 |
| 2023Config 1 of 22 | Auto 10-spd, 6 cyl, 3.0 L | 4-Wheel Drive | Automatic 10-spd | 6 3.0L | 22 |
| 2023Config 2 of 22 | Auto 10-spd, 6 cyl, 3.0 L | 4-Wheel Drive | Automatic 10-spd | 6 3.0L | 24 |
| 2023Config 3 of 22 | Auto 10-spd, 6 cyl, 3.0 L | Rear-Wheel Drive | Automatic 10-spd | 6 3.0L | 26 |
| 2023Config 4 of 22 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 17 |
| 2023Config 5 of 22 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2023Config 6 of 22 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2023Config 7 of 22 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 18 |
| 2023Config 8 of 22 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 18 |
| 2023Config 9 of 22 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 18 |
| 2023Config 10 of 22 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 18 |
| 2023Config 11 of 22 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 17 |
| 2023Config 12 of 22 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 17 |
| 2023Config 13 of 22 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2023Config 14 of 22 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 17 |
| 2023Config 15 of 22 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2023Config 16 of 22 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 15 |
| 2023Config 17 of 22 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 17 |
| 2023Config 18 of 22 | Auto 8-spd, 4 cyl, 2.7 L | 4-Wheel Drive | Automatic 8-spd | 4 2.7L | 19 |
| 2023Config 19 of 22 | Auto 8-spd, 4 cyl, 2.7 L | Rear-Wheel Drive | Automatic 8-spd | 4 2.7L | 20 |
| 2023Config 20 of 22 | Auto 8-spd, 4 cyl, 2.7 L | Rear-Wheel Drive | Automatic 8-spd | 4 2.7L | 20 |
| 2023Config 21 of 22 | Auto 8-spd, 4 cyl, 2.7 L | 4-Wheel Drive | Automatic 8-spd | 4 2.7L | 19 |
| 2023Config 22 of 22 | Auto 8-spd, 4 cyl, 2.7 L | 4-Wheel Drive | Automatic 8-spd | 4 2.7L | 17 |
| 2022Config 1 of 34 | Auto 10-spd, 6 cyl, 3.0 L | Rear-Wheel Drive | Automatic 10-spd | 6 3.0L | 26 |
| 2022Config 2 of 34 | Auto 10-spd, 6 cyl, 3.0 L | 4-Wheel Drive | Automatic 10-spd | 6 3.0L | 21 |
| 2022Config 3 of 34 | Auto 10-spd, 6 cyl, 3.0 L | 4-Wheel Drive | Automatic 10-spd | 6 3.0L | 24 |
| 2022Config 4 of 34 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 17 |
| 2022Config 5 of 34 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 18 |
| 2022Config 6 of 34 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 18 |
| 2022Config 7 of 34 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2022Config 8 of 34 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2022Config 9 of 34 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 17 |
| 2022Config 10 of 34 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 15 |
| 2022Config 11 of 34 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2022Config 12 of 34 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 15 |
| 2022Config 13 of 34 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 15 |
| 2022Config 14 of 34 | Auto 10-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 10-spd | 8 5.3L | 17 |
| 2022Config 15 of 34 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 16 |
| 2022Config 16 of 34 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 16 |
| 2022Config 17 of 34 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 17 |
| 2022Config 18 of 34 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 14 |
| 2022Config 19 of 34 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 16 |
| 2022Config 20 of 34 | Auto 6-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 6-spd | 8 5.3L | 15 |
| 2022Config 21 of 34 | Auto 6-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 6-spd | 8 5.3L | 16 |
| 2022Config 22 of 34 | Auto 6-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 6-spd | 8 5.3L | 16 |
| 2022Config 23 of 34 | Auto 8-spd, 4 cyl, 2.7 L | 4-Wheel Drive | Automatic 8-spd | 4 2.7L | 18 |
| 2022Config 24 of 34 | Auto 8-spd, 4 cyl, 2.7 L | Rear-Wheel Drive | Automatic 8-spd | 4 2.7L | 20 |
| 2022Config 25 of 34 | Auto 8-spd, 4 cyl, 2.7 L | 4-Wheel Drive | Automatic 8-spd | 4 2.7L | 17 |
| 2022Config 26 of 34 | Auto 8-spd, 4 cyl, 2.7 L | 4-Wheel Drive | Automatic 8-spd | 4 2.7L | 18 |
| 2022Config 27 of 34 | Auto 8-spd, 4 cyl, 2.7 L | Rear-Wheel Drive | Automatic 8-spd | 4 2.7L | 20 |
| 2022Config 28 of 34 | Auto 8-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 8-spd | 8 5.3L | 17 |
| 2022Config 29 of 34 | Auto 8-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 8-spd | 8 5.3L | 15 |
| 2022Config 30 of 34 | Auto 8-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 8-spd | 8 5.3L | 15 |
| 2022Config 31 of 34 | Auto 8-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 8-spd | 8 5.3L | 18 |
| 2022Config 32 of 34 | Auto 8-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 8-spd | 8 5.3L | 18 |
| 2022Config 33 of 34 | Auto 8-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 8-spd | 8 5.3L | 17 |
| 2022Config 34 of 34 | Auto 8-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 8-spd | 8 5.3L | 15 |
| 2021Config 1 of 23 | Auto 10-spd, 6 cyl, 3.0 L | 4-Wheel Drive | Automatic 10-spd | 6 3.0L | 24 |
| 2021Config 2 of 23 | Auto 10-spd, 6 cyl, 3.0 L | Rear-Wheel Drive | Automatic 10-spd | 6 3.0L | 26 |
| 2021Config 3 of 23 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 19 |
| 2021Config 4 of 23 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 18 |
| 2021Config 5 of 23 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 18 |
| 2021Config 6 of 23 | Auto 10-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 10-spd | 8 5.3L | 17 |
| 2021Config 7 of 23 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 17 |
| 2021Config 8 of 23 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 16 |
| 2021Config 9 of 23 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 16 |
| 2021Config 10 of 23 | Auto 10-spd, 8 cyl, 6.2 L | 4-Wheel Drive | Automatic 10-spd | 8 6.2L | 17 |
| 2021Config 11 of 23 | Auto 6-spd, 6 cyl, 4.3 L | 4-Wheel Drive | Automatic 6-spd | 6 4.3L | 15 |
| 2021Config 12 of 23 | Auto 6-spd, 6 cyl, 4.3 L | Rear-Wheel Drive | Automatic 6-spd | 6 4.3L | 17 |
| 2021Config 13 of 23 | Auto 6-spd, 6 cyl, 4.3 L | Rear-Wheel Drive | Automatic 6-spd | 6 4.3L | 17 |
| 2021Config 14 of 23 | Auto 6-spd, 6 cyl, 4.3 L | 4-Wheel Drive | Automatic 6-spd | 6 4.3L | 17 |
| 2021Config 15 of 23 | Auto 6-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 6-spd | 8 5.3L | 15 |
| 2021Config 16 of 23 | Auto 6-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 6-spd | 8 5.3L | 16 |
| 2021Config 17 of 23 | Auto 6-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 6-spd | 8 5.3L | 16 |
| 2021Config 18 of 23 | Auto 6-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 6-spd | 8 5.3L | 16 |
| 2021Config 19 of 23 | Auto 6-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 6-spd | 8 5.3L | 16 |
| 2021Config 20 of 23 | Auto 6-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 6-spd | 8 5.3L | 15 |
| 2021Config 21 of 23 | Auto 6-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 6-spd | 8 5.3L | 14 |
| 2021Config 22 of 23 | Auto 6-spd, 8 cyl, 5.3 L | Rear-Wheel Drive | Automatic 6-spd | 8 5.3L | 17 |
| 2021Config 23 of 23 | Auto 6-spd, 8 cyl, 5.3 L | 4-Wheel Drive | Automatic 6-spd | 8 5.3L | 14 |
Data sourced from fueleconomy.gov (U.S. Department of Energy). MPG figures are EPA-tested. Fuel costs are estimates based on average fuel prices and 15,000 miles/year.
GMC Sierra data analysis
How to read this GMC Sierra data
This page lists every 2021 through 2026 GMC Sierra record we hold for this measurement — 150 rows in total, one per configuration and model year rather than a single headline figure. Figures are published as the source agency records them: we do not round, average or interpolate missing years, and a year that is absent from the table is a year with no published measurement rather than a zero. Where a manufacturer offered several drivetrains or body styles in the same year, each appears on its own row, because those variants rarely share the same numbers.
Where these GMC Sierra figures come from
Every value on this page is loaded from federal open data — EPA fuel economy submissions, NHTSA vehicle and crash-test records, and manufacturer specification filings — rather than dealer listings or copied editorial content. The GMC Sierra record refreshes as the agencies publish, which typically means new model-year rows appear in the autumn and crash-test results follow through the model year as vehicles are tested. Because certification data is filed per configuration, treat any single headline number for this vehicle with caution: the figure that applies to a specific car depends on its engine, drivetrain, body style and model year, all of which are listed separately above. If a number here disagrees with a brochure, the brochure is usually quoting the best available configuration rather than the one being sold.
Frequently Asked Questions About Sierra Drivetrain
Is the GMC Sierra front-wheel, rear-wheel, or all-wheel drive?
The GMC Sierra is available in 4-Wheel Drive, Rear-Wheel Drive. Drivetrain availability changes by model year and trim — the table above shows every combination.
Does the GMC Sierra come with AWD or 4WD?
Yes — all-wheel or four-wheel drive is available on the GMC Sierra. See the table above for the specific years and trims.
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