Up to any task, our Diesel powered 2021 GMC Sierra 3500HD Denali Crew Cab 4X4 promises incredible command and control in Onyx Black! Motivated by a TurboCharged 6.6 Litre DuraMax Diesel V8 offering 445hp and 910lb-ft of torque to a 10 Speed Allison Automatic transmission. This Four Wheel Drive truck dominates the daily grind with digital variable steering, an off-road suspension, an autolocking rear differential, and a ProGrade trailering system. As stylish as it is capable, our Sierra is at your service with an exclusive Denali grille, LED lighting, robust skid plates, 20-inch alloy wheels, chrome assist steps, a spray-on bedliner, and a six-function MultiPro tailgate. You are going to love our Denali cabin with heated/ventilated leather front and heated rear seats, a heated leather steering wheel, dual-zone automatic climate control, keyless entry/ignition, remote start, and an amazing array of technology. Highlights include an 8-inch touchscreen, full-color navigation, wireless charging, wireless Android Auto/Apple CarPlay, WiFi compatibility, Bluetooth, and a premium Bose sound system with Richbass to rock your world. GMC gives you the confidence to work harder with an HD surround-view camera system, automatic braking, lane-departure warning, a blind-spot monitor, parking sensors, a bed-view camera, and more. When you demand the best, demand our Sierra 3500 Denali! 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.