5.3L V8 @ 355HP, 10-Speed Automatic, X31 Off-Road Suspension Package, SLT Premium Plus Package, Heated/Cooled Seats, Power Rear Slider, Multi-Flex Tailgate, HD Rubber Floor Mats. This was my work truck; all highway miles. Serviced regularly at the dealership with all recommended services. New tires @ 75,000. Wired for topper. Nice Truck.