2009 GMC Sierra 2500 HD SLE for sale. It is Summit White. 20 chrome steel wheels, 6.6 liter Duramax Diesel with 6-speed Allison transmission. See photos for mileage, 173,749 miles. Truck runs great, is in great condition. Recently changed front hub bearings, front brakes, and engine thermostats. All maintenance has been regularly done to the engine and transmission and the engine is in excellent condition with zero blow-by indicating a very strong bottom end. Air conditioner is COLD. Truck is officially rated at 16,000 pound tow capacity. It has an aftermarket locker differential which has significantly increased its tow capacity. There is a rail-system in the bed for gooseneck/5th wheel towing. Selling $21000 or best offer.