Gmc Sierra 2500hd 2025 Denali 2025. The denali trim moves to second place in the sierra hd’s hierarchy for the 2025 model year with the introduction of the new denali ultimate trim, available for both. 2025 gmc sierra 2500hd denali ultimate.
Edmunds also has gmc sierra 2500hd diesel pricing, mpg, specs, pictures, safety. Detailed specs and features for the 2025 gmc sierra 2500hd diesel denali ultimate including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine.