Recent Arrival! 6-Speed Automatic Electronic with Overdrive, 4WD, Cocoa/Dune Leather.2014 GMC Sierra 1500 SLT White Diamond Clearcoat 4WD 6-Speed Automatic Electronic with Overdrive EcoTec3 5.3L V8 Flex FuelAwards: * 2014 KBB.com Brand Image Awards Reviews: * New, more fuel-efficient engines; improved interior; quiet highway ride. Source: Edmunds * The 2014 Sierras innovative powertrains and handsome aesthetics should appeal to longtime GMC fans and tempt buyers new to the brand. In just one of many ""mine is bigger"" battles in the half-ton truck market, the 2014 Sierras 12,000-pound max tow rating is expected to be king at least for now. Source: KBB.com