Gmc Denali Duramax 2024. 16, 2024 11:57 am est. Detailed specs and features for the 2024 gmc sierra 2500hd diesel denali ultimate including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders,.
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 duramax diesel engine, producing 470. 16, 2024 11:57 am est.