Alternator, 220 Amps, Audio System, Premium Gmc Infotainment System With Navigation And 8” Diagonal Color Touch-Screen, Bed View Camera, Dark Sky Metallic, Dark Walnut/Dark Ash Grey, Forge Perforated Leather-Appointed Seat Trim, Denali Preferred Equipment Group, Emissions, Connecticut, Delaware, Maine, Maryland, Massachusetts, New Jersey, New York, Oregon, Pennsylvania, Rhode Island, Vermont And Washington State Requirements, Engine Block Heater, Engine, Duramax 6.6L Turbo-Diesel V8, B20-Diesel Compatible, Exhaust Brake, Gvwr, 12,100 Lbs. (5488 Kg) With Single Rear Wheels, Hd Surround Vision With Two Trailer View Camera Provisions, Multi-Color 15” Diagonal Head-Up Display, Rear Axle, 3.42 Ratio, Rear Camera Mirror, Seats, Front Bucket With Center Console, Technology Package, Transmission, Allison 10-Speed Automatic, Winter Grille Cover.