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! 2020 Chevrolet Silverado 1500 RST 2018 Acura ILX Special Edition 2020 Chevrolet Trax LS 2011 Audi S5 3.0 Premium Plus quattro 2020 GMC Terrain SLE 2018 Cadillac XT5 Luxury 2013 Ford Edge SEL 2020 RAM 1500 Laramie