Odometer is 50366 miles below market average! Priced below KBB Fair Purchase Price! Summit White 2012 GMC Sierra 2500HD SLT 10-Way Power Front Passenger Seat Adjuster, 18" Forged Polished Aluminum Wheels, 7 Speakers, Air Conditioning, AM/FM radio: SiriusXM, AM/FM Stereo... via vAuto, Inc.