GMC 2015 GMC Sierra 1500 SLT 2015 GMC Sierra 1500 SLT SPECIFICATIONS, PRICE & IMAGES Fuel Type: Gasoline Exterior Color: Blue City MPG: 16 Interior Color: Black Highway MPG: 23 Drivetrain: RWD Transmission: Automatic Engine: 5.3L V8 16V GDI OHV Car Features Hot Car Deals! 2019 Audi Q7 45 Premium Plus 2020 Hyundai Santa Fe Limited 2.0T 2017 Honda Accord EX-L 2016 Hyundai Tucson Limited 2019 Honda Accord Sport 2012 Fisker Karma EcoSport 2017 Volkswagen Golf GTI S 4-Door 2016 GMC Sierra 1500 SLE