Powering the 2022 Sierra 2500HD AT4 is a robust engine, typically a 6.6-liter V8 that generates ample horsepower and torque for heavy towing and hauling tasks. The truck comes with a specialized off-road package, including a 2-inch suspension lift, Rancho® monotube shocks, skid plates, and an electronic locking rear differential for enhanced off-road capability. Four-wheel drive is standard, allowing the Sierra 2500HD AT4 to tackle various terrains and weather conditions with ease. A smooth-shifting automatic transmission handles gear changes seamlessly. The 2022 Sierra 2500HD AT4 offers impressive towing and payload capacities, making it well-suited for heavy-duty tasks. Depending on the configuration, it can tow trailers, boats, and other sizable loads with ease. Advanced towing technologies, such as an integrated trailer brake controller and trailer sway control, are available to assist drivers when towing. Sierra 2500HD AAT4, 10-Speed Automatic, 4WD, Backup Camera, Bluetooth, Cruise Control, Hands Free Phone, Power Locks, Power Windows, Steering Wheel Mounted Audio Controls.CARFAX One-Owner.Onyx Black 2022 GMC Sierra 2500HD AT4 10-Speed Automatic Duramax 6.6L V8 Turbodiesel