2024 GMC Sierra HD AT4X Truck

GMC's AT4X offroad package makes its debut on the Sierra HD series of trucks for the first time. Based on the 2500 HD chassis, the AT4X will have two engine choices on launch: a gasoline V8 making 401 horsepower and 464 lb-ft of torque and the Duramax turbo diesel with 470 horsepower and 975 lb-ft of torque, both backed by an Allison 10-speed automatic transmission. The suspension is upgraded with exclusive control arms and steering knuckles, Multimatic DSSV dampers, skid plates, a rear electronically-locking differential, and 35-inch tires. Every AT4X comes with the premium Obsidian Rush interior package, featuring massage seats, a 12-speaker Bose audio system, and Vanta Ash wood trim. The AT4X AEV Edition comes with AEV stamped steel bumpers, skid plates, 18-inch Salta wheels, and AEV badging. The Sierra HD AT4X arrives in dealers Fall 2023.

Your crate × Close

Free shipping over $200 in the U.S.
International rates at checkout. We're proud to offer a discount to Military, Nurses, and First Responders.