Horsepower 2024 At4 Gmc 6.6 Hd. Select a 2025 gmc sierra at4 and at4x hd to view feature and capability specs on the official site. The 2024 sierra 2500 hd crew cab ranges in power from the pro with 401 horsepower to the denali ultimate with 470 horsepower.

Get kbb fair purchase price, msrp, and dealer invoice price for the 2024 gmc sierra 2500 hd crew cab at4. Choose from either a gmc sierra 2500 hd or 3500 hd at4, and learn more about the vehicle specs, trims, and features available.