2024 2500hd Duramax Denali. Looking at a new 2024 at4 and just curious if the 10 speed transmission helps with mpg. Get kbb fair purchase price, msrp, and dealer invoice price for the 2024 gmc sierra 2500 hd crew cab 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. Come join the discussion about modifications, towing, classifieds,.