Gmc 2025 Sierra 2025. Detailed specs and features for the 2025 gmc sierra 1500 including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more. The 2025 gmc sierra 1500 denali ultimate is the absolute top rung in the brand’s luxury truck hierarchy.
The new 2025 gmc sierra hd pickup truck pulls your world with turbocharged power and an impressive lineup of trims that includes the first ever denali ultimate. Here is a detailed look at the 2025 gmc sierra 1500 payload capabilities across body types, engines, and drivetrains.