GMC 2014 GMC Sierra 3500 SLE 2014 GMC Sierra 3500 SLE SPECIFICATIONS, PRICE & IMAGES Fuel Type: Diesel Exterior Color: Stealth Gray Metallic Interior Color: Light Titanium / Dark Titanium Drivetrain: 4WD Transmission: 6-Speed Automatic Engine: 6.6L V8 32V DDI OHV Turbo Diesel Car Features Hot Car Deals! 2020 Chevrolet Silverado 1500 Custom 2016 Jeep Grand Cherokee Overland 2020 Jeep Grand Cherokee Laredo E 2016 Mercedes-Benz SL 400 2020 Chevrolet Equinox 1LT 2017 Lincoln MKZ Select 2020 Lexus RX 350 2020 Chevrolet Silverado 1500 RST