Federal Air Conditioning Excise Tax, FREIGHT, Ltz Preferred Equipment Group, Engine, Duramax 6.6L Turbo-Diesel V8, B20-Diesel Compatible, Transmission, Allison 10-Speed Automatic, Tires, Lt275/65R20 All-Terrain, Blackwall, Sterling Grey Metallic, Ltz Plus Package, Jet Black, Perforated Leather-Appointed Front Outboard Seating Positions, Trail Boss Package, Technology Package, Gooseneck / 5Th Wheel Prep Package, Ltz Convenience Package Ii, Z71 Off-Road Package, High Idle Switch, Alternators, Dual, 220-Amps Primary, 170-Amps Auxiliary, Sunroof, Power On Crew Cab Models, Assist Steps, Power-Retractable, With Bright Trim, Tailgate, Multi-Flex, 3 Years SiriusXM. NA