Our Diesel driven 2021 GMC Sierra 3500HD Denali Crew Cab 4X4 in Onyx Black is poised and powerful! Motivated by a TurboCharged 6.6 Litre DuraMax Diesel V8 that offers 445hp and 901lb-ft of torque connected to a 6 Speed Automatic transmission to make hard work seem effortless. Pass and pull confidently in this Four Wheel Drive truck that complements its bold look with style and substance. Check out Sierra's digital adaptive steering, off-road suspension, ProGrade Trailering System, an exclusive Denali grille, LED lighting, fog lamps, a spray-on bed liner, chrome assist steps, 20-inch alloy wheels, and a six-function MultiPro tailgate. Luxury awaits in our Denali cabin with heated/ventilated leather front and heated rear seats, a heated leather steering wheel, dual-zone automatic climate control, a sunroof, and advanced technology for fantastic convenience. Take command with an 8-inch touchscreen, full-color navigation, WiFi compatibility, wireless Android Auto/Apple CarPlay, Bluetooth, wireless charging, and a premium Bose sound system. GMC boosts your confidence further with innovative safety technology such as an HD surround-view camera system, automatic braking, lane-departure warning, a blind-spot monitor, and more. Our Sierra 3500HD Denali is where refinement and rugged capability come together to improve your driving! 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.