2025 Denali Ultimate Hd Specs. The 2025 gmc sierra 3500hd denali ultimate is the ultimate towing machine right when it rolls off the lot. At the top of the range, there's now the denali ultimate.

The 2025 gmc sierra 2500hd denali ultimate carries its 8,346 pounds of mass to 60 mph in a shockingly quick 6.5 seconds. From its impressive trailering capabilities, interior tech, and powerful performance, the 2500 hd and 3500 hd.