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! 2018 Toyota RAV4 2020 RAM 1500 Rebel 2020 Acura RDX Technology Package 2019 Dodge Charger SXT 2020 GMC Sierra 1500 Denali 2020 Hyundai Santa Fe SEL 2.4 2013 Audi Q5 2.0T Premium Plus 2020 Acura RDX Advance Package