2025 Gmc 2500hd Denali Ultimate. 2025 gmc sierra 2500hd and 3500hd pickup trucks equipped with the denali ultimate trim are the only truck in gmc’s lineup that come standard with the 6.6l l5p duramax diesel engine, producing 470. 2025 gmc sierra ev denali edition 1 vehicle type:
The 2025 gmc sierra hd denali ultimate, refreshed for the 2025 model year, is gmc’s most premium, luxurious and technologically advanced truck yet. Discover the 2025 gmc sierra 2500hd & 3500hd denali and the first ever denali ultimate, with 30,800 lbs max towing, premium comfort, and more.
