About This GMC Sierra 2500HD AT4

This 2020 GMC Sierra 2500HD 4x4 is finished in Onyx Black over a sharp Jet Black and Kalahari leather interior, offering a blend of heavy-duty Duramax power and premium comfort. The only modification is window tint, keeping the truck looking factory-correct while adding a sleek appearance.Under the hood is the 6.6L Duramax turbodiesel V8 producing 445 horsepower and 910 lb-ft of torque, paired with the Allison 10-speed automatic transmission. With 4WD and a 2-speed transfer case featuring an automatic mode, this Sierra is engineered for towing, hauling, and highway cruising. The 2020 redesign introduced smarter towing technology and the versatile multi-function tailgate, which can serve as a step or a work surface.This truck is well-equipped with the AT4 Package, providing an aggressive stance and features such as 20-inch alloy wheels, black assist steps, LED roof marker lamps, and a Bose premium audio system. Technology includes an 8-inch GMC infotainment screen with Apple CarPlay and Android Auto, wireless charging, and driver-assistance upgrades like front and rear park assist, lane change alert, and rear cross-traffic alert.The interior features heated and ventilated front seats, a heated steering wheel, heated rear seats, dual-zone automatic climate control, and a sunroof. For work-ready capability, the truck is set up with towing mirrors, a receiver hitch, gooseneck hitch provisions, a trailer brake controller, power outlets in the bed, and a spray-in bed liner.There are a few minor flaws noted, including a chip on the windshield and a scratch on the rear bumper. Included with the sale are two keys, the window sticker, a cold-weather grille cover, the block heater cord, and a gooseneck ball with hooks.