2025 Gmc 2025 Hd Denali Ultimate Dually. Detailed specs and features for the 2025 gmc sierra 3500hd diesel denali ultimate including. Discover the 2025 gmc sierra 2500hd & 3500hd denali and the first ever denali ultimate,.
The denali trim moves to second place in the sierra hdโs hierarchy for the 2025 model year with the introduction of the new denali ultimate trim, available for both the 2500 and 3500. It completes a quarter mile run in 14.9 seconds at 93.2 mph and.