The 2025 GMC Sierra brings small rolling model year changes to the Sierra 1500 model (following the refresh for the 2022 (2022.5) model year) and the 2025 Sierra HD – comprised of the Sierra 2500 HD and Sierra 3500 HD – which received a midcycle refresh for the 2024 model year.
Quick Facts
| Sierra 1500 | Sierra HD | |
|---|---|---|
| Assembly location(s) | GM Fort Wayne Assembly in Fort Wayne, Indiana, USA and GM Silao Assembly in Silao, Mexico | GM Flint Assembly in Flint, Michigan, USA |
| Type | Light-duty full-size pickup truck or chassis cab | Heavy-duty full-size pickup truck or chassis cab |
| Layout | Front-Engined, Longitudinal | Front-Engined, Longitudinal |
| Engine(s) | Turbo 2.7L L3B I4 Gasoline, 5.3L L84 EcoTec3 V8 Gasoline, 6.2L L87 EcoTec3 V8 Gasoline, Turbo-Diesel 3.0L LZ0 Duramax I6 | 6.6L L8T V8 Gasoline, 6.6L L5P V8 Duramax Diesel |
| Transmission(s) | 8-Speed Auto, 10-Speed Auto | 10-Speed Auto, 10-Speed Auto Allison |
| Drive wheels | Rear-Wheel-Drive, Four-Wheel-Drive | Rear-Wheel-Drive, Four-Wheel-Drive |
| Availability | U.S.A., Canada, Mexico, Middle East, South Korea | U.S.A., Canada, Mexico, Middle East |
| Predecessor | 2024 GMC Sierra | |
| Successor | 2026 GMC Sierra | |
Changes, Updates, New Features
- Sierra 1500: carry-over model with minor changes
- Sierra HD: carry-over model with minor changes
Model Line
This section coming soon.
2025 GMC Sierra 1500
Minor changes following substantial updates as part of mid cycle enhancement / refresh for 2022/2022.5 model year.
2025 GMC Sierra HD
Minor changes following substantial updates as part of mid cycle enhancement / refresh for 2024 model year.
Powertrain
The 2025 GMC Sierra offers the following engine and transmission choices.
| Class | Engine | Fuel | Aspiration | Transmission | Horsepower @ RPM | Torque @ RPM | Axle Ratio |
|---|---|---|---|---|---|---|---|
| Sierra 1500 | 2.7L L3B I4 | Gasoline | Turbocharged | 8-Speed Automatic (MQE) | 310 @ 5600 | 430 @ 1500 | 3.42 |
| Sierra 1500 | 5.3L L84 EcoTec3 V8 | Gasoline | Atmospheric | 2WD 8-Speed Automatic (MQE) / 4WD 10-Speed Automatic (MQB) | 355 @ 5600 | 383 @ 4100 | 3.42 |
| Sierra 1500 | 6.2L L87 EcoTec3 V8 | Gasoline | Atmospheric | 10-Speed Automatic (MQB) | 420 @ 5600 | 460 @ 4100 | 3.23 |
| Sierra 1500 | 3.0L LZ0 Duramax I6 | Diesel | Turbocharged | 10-Speed Automatic (MQB) | 305 @ 3750 | 495 @ 2750 | 3.23 |
| Sierra HD | 6.6L L8T V8 | Gasoline | Naturally Aspirated | 10-Speed Automatic (MKM) | 401 @ 5200 | 464 @ 4000 | 3.73 |
| Sierra HD | 6.6L Duramax L5P V8 | Diesel | Turbocharged | 10-Speed Automatic (MGM, MGU) | 470 @ 2800 | 975 @ 1600 | 3.42 |
Platform
The 2025 Sierra Light Duty models continue to ride on the GM T1 platform shared most directly with the 2025 Chevy Silverado 1500. Meanwhile, the 2025 Sierra Heavy Duty continues to ride on a more capable version of the same GM T1 platform shared most directly with the 2025 Silverado HD.
Production
The 2025 Sierra was produced across the following three plants:
Light-Duty
- GM Fort Wayne plant, Indiana, USA
- GM Silao plant, Guanajuato, Mexico
Heavy-Duty
- GM Flint plant, Michigan, USA
Sales
See GMC Sierra sales numbers for global markets.
Discussion
Discuss the 2025 GMC Sierra in our GMC forum.
Photos
Gallery coming soon.
Gallery coming soon.
Sierra News
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