2024 Gmc At4x Hd Denali. The 2024 gmc sierra hd features two new trims designed to boost the truck’s appeal (and sticker price): The 2024 gmc sierra 2500hd denali ultimate carries its 8,346 pounds of mass to 60 mph in a shockingly quick 6.5 seconds.

The first ever sierra hd at4x and at4x aev edition is taking the at4 experience to the next level. The denali trim moves to second place in the sierra hd’s hierarchy for the 2024 model year with the introduction of the new denali ultimate trim, available for both the 2500 and 3500.