2025 Denali Hd Duramax. Explore the 2025 gmc sierra 2500 hd & 3500 hd denali luxury truck. Those figures are up from 445 horsepower and 910.
As we can see from these tables, the 2025 gmc sierra hd model with the highest towing capacity rating is the 3500 hd regular cab / long bed drw (dual rear. Customize your gmc sierra 2500hd or 3500hd denali.