GMC Sierra Transmission Specifications
The 2026 GMC Sierra uses Automatic (A1), Automatic 10-spd, Automatic 8-spd and other transmissions, depending on engine and trim.
Latest model year (2026):
The GMC Sierra comes with Automatic (A1), Automatic 10-spd, Automatic 8-spd depending on engine and trim.
GMC Sierra Transmission — All Years
| Year | Trim | Engine | Transmission | Drive | MPG Comb. |
|---|---|---|---|---|---|
| 2026 | Auto (A1) | — | Automatic (A1) | 4-Wheel Drive | 64 |
| 2026 | Auto (A1) | — | Automatic (A1) | 4-Wheel Drive | 67 |
| 2026 | Auto (A1) | — | Automatic (A1) | 4-Wheel Drive | 68 |
| 2026 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | 4-Wheel Drive | 23 |
| 2026 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | 4-Wheel Drive | 19 |
| 2026 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | 4-Wheel Drive | 24 |
| 2026 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | Rear-Wheel Drive | 25 |
| 2026 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2026 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2026 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 18 |
| 2026 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2026 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 17 |
| 2026 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 15 |
| 2026 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 16 |
| 2026 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2026 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2026 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2026 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 15 |
| 2026 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 15 |
| 2026 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2026 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 17 |
| 2026 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 18 |
| 2026 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 17 |
| 2026 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | Rear-Wheel Drive | 19 |
| 2026 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | Rear-Wheel Drive | 20 |
| 2025 | Auto (A1) | — | Automatic (A1) | 4-Wheel Drive | 64 |
| 2025 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | 4-Wheel Drive | 23 |
| 2025 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | Rear-Wheel Drive | 26 |
| 2025 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | 4-Wheel Drive | 24 |
| 2025 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | 4-Wheel Drive | 19 |
| 2025 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 15 |
| 2025 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2025 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2025 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2025 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2025 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2025 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 16 |
| 2025 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 18 |
| 2025 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 17 |
| 2025 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2025 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2025 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2025 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 15 |
| 2025 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 15 |
| 2025 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2025 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 18 |
| 2025 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | Rear-Wheel Drive | 19 |
| 2025 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 16 |
| 2025 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | Rear-Wheel Drive | 19 |
| 2025 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 17 |
| 2024 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | Rear-Wheel Drive | 25 |
| 2024 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | 4-Wheel Drive | 24 |
| 2024 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | 4-Wheel Drive | 19 |
| 2024 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | 4-Wheel Drive | 22 |
| 2024 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2024 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 18 |
| 2024 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 15 |
| 2024 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 15 |
| 2024 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2024 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 18 |
| 2024 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 16 |
| 2024 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 18 |
| 2024 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2024 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2024 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2024 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2024 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2024 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2024 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 15 |
| 2024 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 15 |
| 2024 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2024 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | Rear-Wheel Drive | 19 |
| 2024 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 16 |
| 2024 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 18 |
| 2024 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 17 |
| 2024 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | Rear-Wheel Drive | 20 |
| 2023 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | 4-Wheel Drive | 22 |
| 2023 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | 4-Wheel Drive | 24 |
| 2023 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | Rear-Wheel Drive | 26 |
| 2023 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2023 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2023 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 16 |
| 2023 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 18 |
| 2023 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 18 |
| 2023 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 18 |
| 2023 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 18 |
| 2023 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2023 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2023 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2023 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2023 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2023 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2023 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 15 |
| 2023 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2023 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 15 |
| 2023 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 19 |
| 2023 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | Rear-Wheel Drive | 20 |
| 2023 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | Rear-Wheel Drive | 20 |
| 2023 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 19 |
| 2023 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 17 |
| 2022 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | Rear-Wheel Drive | 26 |
| 2022 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | 4-Wheel Drive | 21 |
| 2022 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | 4-Wheel Drive | 24 |
| 2022 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2022 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 18 |
| 2022 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 18 |
| 2022 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2022 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2022 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2022 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 15 |
| 2022 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2022 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 15 |
| 2022 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 15 |
| 2022 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | Rear-Wheel Drive | 17 |
| 2022 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2022 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2022 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2022 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 14 |
| 2022 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2022 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 15 |
| 2022 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 16 |
| 2022 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 16 |
| 2022 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 18 |
| 2022 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | Rear-Wheel Drive | 20 |
| 2022 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 17 |
| 2022 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 18 |
| 2022 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | Rear-Wheel Drive | 20 |
| 2022 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | 4-Wheel Drive | 17 |
| 2022 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | Rear-Wheel Drive | 15 |
| 2022 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | 4-Wheel Drive | 15 |
| 2022 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | Rear-Wheel Drive | 18 |
| 2022 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | Rear-Wheel Drive | 18 |
| 2022 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | 4-Wheel Drive | 17 |
| 2022 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | 4-Wheel Drive | 15 |
| 2021 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | 4-Wheel Drive | 24 |
| 2021 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | Rear-Wheel Drive | 26 |
| 2021 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | 4-Wheel Drive | 24 |
| 2021 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 19 |
| 2021 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 18 |
| 2021 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 18 |
| 2021 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2021 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2021 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2021 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 16 |
| 2021 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2021 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | 4-Wheel Drive | 15 |
| 2021 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | Rear-Wheel Drive | 17 |
| 2021 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | Rear-Wheel Drive | 17 |
| 2021 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | 4-Wheel Drive | 17 |
| 2021 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 15 |
| 2021 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 16 |
| 2021 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 16 |
| 2021 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 16 |
| 2021 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 16 |
| 2021 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 15 |
| 2021 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 14 |
| 2021 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 17 |
| 2021 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 14 |
| 2021 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 17 |
| 2021 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 16 |
| 2021 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | Rear-Wheel Drive | 21 |
| 2021 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | Rear-Wheel Drive | 21 |
| 2021 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 19 |
| 2021 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 19 |
| 2021 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | Rear-Wheel Drive | 17 |
| 2021 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | 4-Wheel Drive | 16 |
| 2021 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | Rear-Wheel Drive | 19 |
| 2021 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | 4-Wheel Drive | 18 |
| 2021 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | 4-Wheel Drive | 16 |
| 2021 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | 4-Wheel Drive | 18 |
| 2020 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | 4-Wheel Drive | 24 |
| 2020 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | 4-Wheel Drive | 24 |
| 2020 | Auto 10-spd, 6 cyl, 3.0 L | 6 3.0L | Automatic 10-spd | Rear-Wheel Drive | 26 |
| 2020 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 19 |
| 2020 | Auto 10-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 10-spd | 4-Wheel Drive | 18 |
| 2020 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2020 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2020 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | 4-Wheel Drive | 15 |
| 2020 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | Rear-Wheel Drive | 17 |
| 2020 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | 4-Wheel Drive | 17 |
| 2020 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | Rear-Wheel Drive | 17 |
| 2020 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 15 |
| 2020 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 17 |
| 2020 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 17 |
| 2020 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 16 |
| 2020 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 16 |
| 2020 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 16 |
| 2020 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 15 |
| 2020 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 20 |
| 2020 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | Rear-Wheel Drive | 20 |
| 2020 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 20 |
| 2020 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | Rear-Wheel Drive | 21 |
| 2020 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | Rear-Wheel Drive | 20 |
| 2020 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | Rear-Wheel Drive | 19 |
| 2020 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | 4-Wheel Drive | 18 |
| 2020 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | 4-Wheel Drive | 18 |
| 2019 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2019 | Auto 10-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 10-spd | 4-Wheel Drive | 17 |
| 2019 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | 4-Wheel Drive | 17 |
| 2019 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | Rear-Wheel Drive | 17 |
| 2019 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | 4-Wheel Drive | 15 |
| 2019 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | Rear-Wheel Drive | 17 |
| 2019 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 17 |
| 2019 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 17 |
| 2019 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 17 |
| 2019 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 16 |
| 2019 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 17 |
| 2019 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 15 |
| 2019 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 16 |
| 2019 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 17 |
| 2019 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 19 |
| 2019 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | Rear-Wheel Drive | 20 |
| 2019 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | 4-Wheel Drive | 20 |
| 2019 | Auto 8-spd, 4 cyl, 2.7 L | 4 2.7L | Automatic 8-spd | Rear-Wheel Drive | 21 |
| 2019 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | 4-Wheel Drive | 17 |
| 2019 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | Rear-Wheel Drive | 19 |
| 2019 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | Rear-Wheel Drive | 19 |
| 2019 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | 4-Wheel Drive | 17 |
| 2018 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | 4-Wheel Drive | 19 |
| 2018 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | Rear-Wheel Drive | 20 |
| 2018 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 17 |
| 2018 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 18 |
| 2018 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 19 |
| 2018 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 19 |
| 2018 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 17 |
| 2018 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 18 |
| 2018 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | 4-Wheel Drive | 18 |
| 2018 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | Rear-Wheel Drive | 20 |
| 2018 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | Rear-Wheel Drive | 18 |
| 2018 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | 4-Wheel Drive | 17 |
| 2018 | Auto 8-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 8-spd | 4-Wheel Drive | 17 |
| 2018 | Auto 8-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 8-spd | Rear-Wheel Drive | 17 |
| 2017 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | 4-Wheel Drive | 19 |
| 2017 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | Rear-Wheel Drive | 20 |
| 2017 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 19 |
| 2017 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 19 |
| 2017 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 18 |
| 2017 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 18 |
| 2017 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 17 |
| 2017 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 17 |
| 2017 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | Rear-Wheel Drive | 20 |
| 2017 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | 4-Wheel Drive | 18 |
| 2017 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | Rear-Wheel Drive | 18 |
| 2017 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | 4-Wheel Drive | 17 |
| 2017 | Auto 8-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 8-spd | 4-Wheel Drive | 17 |
| 2017 | Auto 8-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 8-spd | Rear-Wheel Drive | 17 |
| 2016 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | Rear-Wheel Drive | 20 |
| 2016 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | 4-Wheel Drive | 19 |
| 2016 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 17 |
| 2016 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 17 |
| 2016 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 19 |
| 2016 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 19 |
| 2016 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 18 |
| 2016 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 18 |
| 2016 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | 4-Wheel Drive | 17 |
| 2016 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | Rear-Wheel Drive | 18 |
| 2016 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | 4-Wheel Drive | 18 |
| 2016 | Auto 8-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 8-spd | Rear-Wheel Drive | 20 |
| 2016 | Auto 8-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 8-spd | 4-Wheel Drive | 17 |
| 2016 | Auto 8-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 8-spd | Rear-Wheel Drive | 17 |
| 2015 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | Rear-Wheel Drive | 18 |
| 2015 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | Rear-Wheel Drive | 20 |
| 2015 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | 4-Wheel Drive | 19 |
| 2015 | Auto 6-spd, 6 cyl, 4.3 L | 6 4.3L | Automatic 6-spd | 4-Wheel Drive | 18 |
| 2015 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 17 |
| 2015 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 17 |
| 2015 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 17 |
| 2015 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 17 |
| 2015 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 19 |
| 2015 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 18 |
| 2015 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | Rear-Wheel Drive | 19 |
| 2015 | Auto 6-spd, 8 cyl, 5.3 L | 8 5.3L | Automatic 6-spd | 4-Wheel Drive | 18 |
| 2015 | Auto 8-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 8-spd | Rear-Wheel Drive | 17 |
| 2015 | Auto 8-spd, 8 cyl, 6.2 L | 8 6.2L | Automatic 8-spd | 4-Wheel Drive | 17 |
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 Transmission FAQ
What transmission does the GMC Sierra have?
The GMC Sierra is offered with Automatic (A1), Automatic 10-spd, Automatic 8-spd, Automatic 6-spd (2026 and earlier model years). Availability depends on engine and trim — see the year-by-year table above.
Does the GMC Sierra come with a manual transmission?
No manual transmission is listed for the GMC Sierra in the EPA data we track; all listed configurations are automatic or CVT.