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 Acura RDX 2016 Ford Expedition EL XLT 2013 Hyundai Elantra GT Base 2015 Audi A6 2.0T Premium 2019 Dodge Journey SE 2019 Ford Explorer Limited 2020 Toyota RAV4 LE 2019 Nissan Murano SV