GMC 2011 GMC Sierra 1500 SLE 2011 GMC Sierra 1500 SLE SPECIFICATIONS, PRICE & IMAGES Fuel Type: E85 Flex Fuel Exterior Color: Black City MPG: 13 Interior Color: Black Highway MPG: 18 Transmission: Automatic Engine: 6-cylinder Car Features Hot Car Deals! 2014 Mercedes-Benz CLA250 2018 Ford Focus SE 2017 Cadillac XT5 LuxuryCertified 2019 Lexus NX 300 NAVIGATION 2019 Jeep Cherokee Latitude 2019 Ford Expedition XLT 2019 Hyundai Tucson SEL 2020 Buick Envision Preferred