6-Speed Automatic Electronic with Overdrive, 4WD, Ebony Cloth. Clean CARFAX. 2012 Chevrolet Silverado 1500 LT Summit White 4WD 6-Speed Automatic Electronic with Overdrive Vortec 5.3L V8 SFI VVT Flex Fuel Awards: * JD Power Dependability Study Reviews: * Smooth and quiet ride; comfortable seats; powerful V8 options. Source: Edmunds * With its numerous possible configurations, the 2012 Chevy Silverado half-ton pickup will please all but the chronically indecisive. From cab configurations to bed lengths to trim and option packages, the Silverado is the half-ton jack of all trades, including models that can run on E85. Source: KBB.com