DESCRIPTION 2013 GMC Sierra SLE 2500 HD 4x4 Pickup (GP11389, Unit 123), extended cab, Vortec 6.0L gas engine, automatic transmission, heat, air conditioning, dual climate control, Am/Fm radio, power windows, locks and mirrors, cruise control, running boards, tow package, LT265/70R17 tires, bed liner, 5th wheel ball hitch, shows 175,627 miles. Serial Number: 1GT220G7DZ285292 Notes: Check engine light is on.