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!Certified 2019 Lexus RX 350 NAVIGATIONCertified 2018 Toyota Corolla LE 2019 Ford F-350 XLTCertified 2019 Audi A4 2.0T Premium Plus 2016 BMW i 2019 Ford Fusion S 2020 MINI Hardtop Cooper S 2016 Kia Forte Koup SX