Federal Air Conditioning Excise Tax, FREIGHT, Ltz Preferred Equipment Group, Engine, Duramax 6.6L Turbo-Diesel V8, B20-Diesel Compatible, Transmission, 10-Speed Automatic, Cypress Grey, Jet Black, Perforated Leather-Appointed Front Outboard Seating Positions, Trail Boss Package, Ltz Plus Package, Technology Package, Gooseneck / 5Th Wheel Prep Package, Ltz Convenience Package Ii, Z71 Off-Road Package, High Idle Switch, Sunroof, Power On Crew Cab Models, Assist Steps, Power-Retractable, With Bright Trim, Lamps, Smoked Amber Roof Marker, (Led), Tailgate, Multi-Flex, 3 Years Sirius Xm, Trailer Tire Pressure Monitor Sensors. NA