With our highly capable 2020 GMC Sierra 2500HD AT4 Crew Cab 4X4 Onyx Black, you can be on the job even off the beaten path! Powered by a mighty 6.6 Liter V8 offering 401hp connected to a robust 6 Speed Automatic transmission to maximize your pulling potential. This fearless Four Wheel Drive truck also features Digital Variable Steering Assistance for an extra measure of confidence plus an Autotrac two-speed transfer case for improved functionality. Standing proud, our Sierra 2500HD shows off style and strength with LED lighting, a head-turning grille, power-folding trailering mirrors, running boards, side bed steps, sunroof, a spray-on bedliner, hitch receiver, and GMC's amazing MultiPro tailgate.The premium AT4 cabin puts your comfort first with leather heated/ventilated front and heated rear seats, a leather heated steering wheel, dual-zone automatic climate control, and convenient storage solutions. To match its brawn with high-tech brains, our truck is fitted with an 8-inch touchscreen, full-color navigation, WiFi compatibility, Android Auto/Apple CarPlay, Bluetooth, a six-speaker sound system, and a Pro Grade Trailering System complete with hitch guidance. Smart safety features are here in our GMC as well including an HD rearview camera, tire-pressure monitoring, multiple airbags, ABS, a rear-seat reminder, and more. Solidly built and sophisticated, our Sierra 2500HD AT4 is at your service! Save this Page and Call for Availability. We Know You Will Enjoy Your Test Drive Towards Ownership!