"Engine: 6.7L High Output Power Stroke V8 Diesel,5Th Wheel/Gooseneck Hitch Prep Package,6"" Angular Bright Anodized Step Bars,Fx4 Off-Road Package,Navigation System,Securicode Keyless Entry Keypad (Driver'S Side),Electronic-Locking W/3.31 Axle Ratio,Avalanche,Tailgate Step & Handle,Rapid-Heat Supplemental Cab Heater,Tires: Lt275/70Rx18E Bsw A/T (4),Engine Block Heater,Upfitter Switches (6),410 Amp Dual Alternators,Dual Agm 68 Ah Battery,Keyless Start,Cooled Front Seat(S),Black Onyx; Front Activex Trimmed 40/Console/40 Seats,Front License Plate Bracket,Order Code 618A,Transmission: Torqshift 10-Speed Automatic"