2024 Sierra Denali Specs Mpg. Find incentives, rebates, recalls, and warranty. The 2024 gmc sierra 1500 denali ultimate is the absolute top rung in the brand’s luxury truck hierarchy.

Detailed specs and features for the 2024 gmc sierra 2500hd diesel denali ultimate including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders,. Available with a choice of engines, it comes in a singular body style, the crew cab.