2025 Gmc Denali Ultimate Duramax Specs

2025 Gmc Denali Ultimate Duramax Specs. The 2025 gmc sierra 3500hd denali ultimate is the ultimate towing machine right when it rolls off the lot. Both the gmc 2500hd and 3500hd receive updated styling inside and out for the 2025 model year.

Discover its exclusive features, performance, towing specs, and interior design. Both the gmc 2500hd and 3500hd receive updated styling inside and out for the 2025 model year.