I. Specification 100% tested prior to leaving the factory; Includes blower motor fan cage impeller already installed Plug and play,Direct replacement Built to strict quality control standards; II. Compatibility 2003-2005 Chevrolet Avalanche 15002003-2007 Chevrolet Silverado 15002005 Chevrolet Silverado 1500 HD2004 Chevrolet Silverado 25002003-2007 Chevrolet Silverado 2500 HD2003-2006 Chevrolet Silverado 35002003-2007 GMC Sierra 15002003-2007 GMC Sierra 2500 HD2004-2006 GMC Sierra 3500 III.Includes: .
