Ready to command attention, our diesel-powered 2020 GMC Sierra 3500HD AT4 Crew Cab 4X4 in Onyx Black is eager for work on the road or off! Motivated by a TurboCharged 6.6 Liter DuraMax Diesel V8 delivering 401hp to a 10 Speed Allison Automatic transmission. This Four Wheel Drive provides impressive trail capability with skid plates, terrain management, and an off-road suspension complete with Rancho shocks, and it has a ProGrade Trailering System to simplify towing and hauling. Bold good looks come into play with LED lighting, fog lamps, red recovery hooks, a spray-on bed liner, side bed steps, power-folding mirrors, aggressive alloy wheels, and GMC's MultiPro tailgate. You will love the dynamic character of our AT4 cabin with heated/ventilated leather power front and heated rear seats, a heated leather steering wheel, dual-zone automatic climate control, cruise control, keyless open/start, and clever technology for keeping connected. Highlights include an 8-inch touchscreen, Android Auto®/Apple CarPlay®, Bluetooth®, WiFi compatibility, and a six-speaker sound system. It's a sophisticated setting for demanding days. GMC helps you stay safe with an HD rear camera, ABS, stability/traction control, hill-descent control, trailer sway control, a rear-seat reminder, hill-start assistance, tire pressure monitoring, and more. Rugged yet refined, our Sierra 3500 AT4 is ready to rock! Save this Page and Call for Availability. We Know You Will Enjoy Your Test Drive Towards Ownership! Drive a Little, Save a Lot. Really Experience the Murray Difference.