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Detailed specs and features for the 2025 GMC Sierra 1500 Regular Cab including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more. 6.6L L8T V8 Gasoline, 6.6L L5P V8 Duramax Diesel: Transmission(s) 8-Speed Auto, 10-Speed Auto:
2025 GMC 2500 Introducing New Sierra 2500 HD Denali Reviews
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NEW 2025 Chevrolet Tahoe More Powerful Duramax Diesel and a Smoother. The 2025 GMC Sierra offers the following engine and transmission choices You are currently viewing GMC.com (United States).
The Future Of Power Anticipating The 2025 GMC Truck Redesign 2025. For 2025, the GMC Sierra 1500 continues its tradition of delivering strong performance, impressive towing capabilities, and versatile engine options. Detailed specs and features for the 2025 GMC Sierra 1500 including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more.