DESCRIPTION 2012 GMC Sierra 2500 HD 4x4 Pickup (GP11391, Unit 110), regular cab, Vortec 6.0L gas engine, automatic transmission, heat, air conditioning, Am/Fm radio, power windows, locks and mirrors, cruise control, running boards, tow package, bed liner, shows 125,140 miles. Serial Number: 1GT02ZCG1CF242773 Notes: