Gmc 2024 Denali Ultimate. 2024 gmc sierra 2500hd and 3500hd pickup trucks equipped with the denali ultimate trim are the only truck in gmc’s lineup that come standard with the 6.6l l5p. The refreshed 2024 gmc sierra heavy duty offers a new, more luxurious trim level called denali ultimate.
Explore the features and prices of the 2024 gmc sierra 1500 denali and denali ultimate, the most luxurious pickup trucks in their class. 2024 gmc sierra 2500hd and 3500hd pickup trucks equipped with the denali ultimate trim are the only truck in gmc’s lineup that come standard with the 6.6l l5p.