2018 Chevrolet Silverado 3500HD High Country High Country 4WD Allison 1000 6-Speed Automatic Black Duramax 6.6L V8 Turbodiesel Allison 1000 6-Speed Automatic, 4WD, Saddle : * 2018 10 Most Awarded Brands[!@@Additional Info@@!]Navigation System,Alloy...