Onyx Black 2015 GMC Sierra 2500HD Denali 4WD Allison 1000 6-Speed Automatic Duramax 6.6L V8 Turbodiesel *OFF ROAD TIRES, CUSTOM WHEELS, Allison 1000 6-Speed Automatic, 4WD, Jet Black w/Leather Appointed Seat Trim, 3.73 Rear Axle Ratio, Alloy wheels, Driver Alert Package, Duramax Plus Package, Hill Descent Control, Off-Road Package, Power Sunroof, Z71 Chrome Front Fender Emblems. Awards: * 2015 KBB.com Brand Image Awards CALL NOW!! This vehicle will not make it to the weekend! *