2014 GMC Sierra 1500 SLE Iridium Metallic Clean CARFAX. Clean CARFAX. RWD 6-Speed Automatic Electronic with Overdrive EcoTec3 4.3L V6 Flex Fuel 6-Speed Automatic Electronic with Overdrive, Black Cloth. Recent Arrival! Awards: * 2014 KBB.com Brand Image Awards Reviews: * The 2014 Sierra's 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 Sierra's 12,000-pound max tow rating is expected to be king "“ at least for now. Source: KBB.com * New, more fuel-efficient engines; improved interior; quiet highway ride. Source: Edmunds
