Blue Granite Metallic 2011 Chevrolet Silverado 3500HD LT 4WD Allison 1000 6-Speed Automatic Duramax 6.6L V8 Turbodiesel Duramax 6.6L V8 Turbodiesel, Allison 1000 6-Speed Automatic, 4WD, Light Titanium/Ebony Cloth.