2025 Gmc 3500hd Duramax Dually. Explore the 2025 gmc sierra 2500 hd & 3500 hd denali luxury truck. Detailed specs and features for the 2025 gmc sierra 3500hd diesel denali ultimate including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders,.

0 $10k $20k $30k $40k $50k $60k. Denali goes ultimate, at4x joins the ranks.