GMC 2020 GMC Sierra 1500 SLE 2020 GMC Sierra 1500 SLE SPECIFICATIONS, PRICE & IMAGES Fuel Type: Gasoline Exterior Color: Onyx Black City MPG: 20 Interior Color: Jet Black Highway MPG: 23 Drivetrain: 4WD Transmission: Automatic Engine: Gas V8 5.3L Car Features Hot Car Deals! 2015 BMW 328 i 2020 GMC Yukon Denali 2006 INFINITI M35 2014 BMW 535d xDrive 2018 Chevrolet Traverse LT Cloth 2019 RAM 1500 Classic SLT 2017 RAM 1500 Laramie 2020 Buick Enclave Avenir