TOPKICK C5500, Medium Duty Trucks - Versatile Hauler Trucks, Duramax 6.6L, Automatic, 2008 GMC TOPKICK C5500 Duramax Diesel 6.6L Allison 1000 Automatic Transmission. All Leather Air Ride Captain Seats, All Power Leather Laydown Backseat into bed. Exhaust Brake Heated Mirrors PTO Prep Jenson Double Din Radio w/ GPS NAV Pandora Bluetooth Back up Camera CD DVD. Flip Down DVD Player Mounted from Roof., 315 Horse Power, Leaf Springs Suspension, Wheels, Wheel Base, , Single Axle, Ratio,