Images Wesden_GMC_Envoy_Cap_550-178-12001.png Wesden_GMC_Envoy_Cap_550-178-back-12002.png Previous Next Vehicle Make GMC Vehicle Model Envoy Vehicle Year 2002 2003 2004 2005 2006 2007 2008 2009 Title CAP# 550178 Body CHROME 6-9/16 GMC ENVOY CAP part # cap diameter make model year oe wheel diameter spoke 550178 6 9/16" GMC Envoy 2002 - 2009 17" 6 Double Spoke