2003-2006 Chevrolet Avalanche 1500 2500. For Avalanche, Fits Models without Factory Cladding ONLY. 2003-2006 Chevrolet Silverado 1500 2500 3500. 2003-2006 Chevrolet Silverado 1500 HD 2500 HD. 2007 Chevrolet Silverado 1500 1500 HD 2500 HD 3500 Classic.