2025 Gmc Sierra 2025 Hd. Gm has unveiled the refreshed 2025 gmc sierra hd, debuting fresh exterior styling, a new interior, a revised trim level lineup, powertrain updates, and more. General motors officially unveiled the fully refreshed 2025 gmc sierra hd last october, revealing an updated exterior, an overhauled interior, a new trim level.
Detailed specs and features for the 2025 gmc sierra 2500hd including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders,. Gmcโs heavy duty lineup gets more towing power, upgraded interiors, and a new denali ultimate trim.