CARFAX One-Owner. 2014 GMC Sierra 1500 SLT 6-Speed Automatic Electronic with Overdrive, 4WD, Black Leather. 4WD EcoTec3 5.3L V8 Flex Fuel Priced below KBB Fair Purchase Price! Odometer is 28008 miles below market average! Reviews: * New, more fuel-efficient engines; improved interior; quiet highway ride. Source: Edmunds * The 2014 Sierraâs 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 Sierraâs 12,000-pound max tow rating is expected to be king â at least for now. Source: KBB.com Awards: * 2014 KBB.com Brand Image Awards Offered as wholesale to the public. AS-IS. No inspection performed.