3 Months / 3,000 Mile Powertrain Warranty Included w/ Any Vehicle PurchaseOur top-of-the-line 2015 GMC Sierra 3500HD Denali Crew Cab 4X4 Dual Rear Wheel is presented in Onyx Black! Powered by a TurboCharged 6.6 Liter DuraMax Diesel V8 generates 397hp paired with an innovative Allison 1000 6 Speed Automatic transmission. Our Four Wheel Drive truck also has a massive payload/towing capacity, an automatic locking rear differential, and a heavy-duty trailering package that further augments control. The strong stance of our Denali commands the road with prominent black wheels and chrome trim. Inside, our Denali cabin feels tailor-made for you. You'll appreciate cargo box illumination, remote ignition, a power outlet, a rearview camera, dual-zone automatic climate control, power-adjustable pedals, and more! Settle into heated/ventilated leather seats, open the huge sunroof, and admire the touchscreen with GMC IntelliLink, smartphone integration, Bluetooth®, voice controls, navigation, available WiFi hotspot, and more! You'll love listening to your favorite tunes on a premium Bose audio system with a CD and available satellite radio as you get the job done in this sturdy truck. Of course, safety is always number one with GMC, and we supply lane departure alert, forward collision warning, ABS, stability/traction control, a multitude of airbags, and even OnStar with on-demand roadside assistance. This Sierra 3500HD Denali is an impressive, powerful choice! Save this Page and Call for Availability. We Know You Will Enjoy Your Test Drive Towards Ownership.