GMC 2013 GMC Sierra 1500 SLE1 2013 GMC Sierra 1500 SLE1 SPECIFICATIONS, PRICE & IMAGES Fuel Type: Gasoline Exterior Color: Black City MPG: 15 Interior Color: gray Highway MPG: 21 Drivetrain: RWD Transmission: automatic 6 speed Engine: 5.3L 8 Cylinder Engine Car Features Hot Car Deals! 2016 Buick Encore Convenience 2020 GMC Sierra 1500 Elevation 2015 GMC Sierra 1500 SLTCertified 2019 Mercedes-Benz Base 2019 Mazda CX-5 Touring 2019 RAM ProMaster 2500 High Roof 2020 Hyundai Santa Fe SEL 2.0T 2018 Honda Accord LX