2025 Denali Ultimate 2025 Specs. The 2025 gmc sierra 1500 denali and denali ultimate are the most luxurious pickup trucks in their class, offering another level of innovation and capability. It completes a quarter mile run in 14.9 seconds at 93.2 mph and.
Available with a choice of engines, it comes in a singular body style, the crew cab. The sierra 1500 also can be had with adaptive dampers and wheels as large as 22 inches.