2025 Denali Hd. The new 2025 gmc sierra hd pickup truck pulls your world with turbocharged power and an impressive lineup of trims that includes the first ever denali ultimate. Select your preferred cab & box style.

For 2025, the sierra hd denali ultimate makes that clearer than ever before. The 2025 gmc sierra 2500hd denali ultimate carries its 8,346 pounds of mass to 60 mph in a shockingly quick 6.5 seconds.