GMC 1999 GMC Sierra 1500 SLE 1999 GMC Sierra 1500 SLE SPECIFICATIONS, PRICE & IMAGES Fuel Type: Gasoline Exterior Color: Champagne City MPG: 15 Interior Color: Tan Highway MPG: 19 Drivetrain: RWD Transmission: 4-Speed Automatic Engine: 5.3L V8 16V MPFI OHV Car Features Hot Car Deals! 2015 RAM 1500 SLT 2020 Chevrolet Equinox LS 2020 Mercedes-Benz GLS 450 Base 4MATIC 2020 Honda Civic EX-L 2017 Acura RDX Advance Package 2020 Lexus RX 350 2018 Kia Stinger GT2 2020 Dodge Durango GT