2024 Gmc Sierra 3500hd Denali Ultimate. The 2024 gmc sierra hd denali ultimate, refreshed for the 2024 model year, is gmc's most premium, luxurious and technologically advanced truck yet. Denali goes ultimate, at4x joins the ranks.

Pro, sle, slt, at4, denali and denali ultimate. Formerly an options package, this trim represents the pinnacle of what gmc packs into its trucks.