2024 Gmc Sierra 2024 Duramaxx. General motors officially unveiled the fully refreshed 2024 gmc sierra hd last october, revealing an updated exterior, an overhauled interior, a new trim level lineup, and. The 2024 gmc sierra 2500hd denali ultimate carries its 8,346 pounds of mass to 60 mph in a shockingly quick 6.5 seconds.

Denali goes ultimate, at4x joins the ranks. All are on extended drains and all sample.