GENERAL MOTORSGMC Canyon 2004-2006GMC Denali, GMC Envoy 2002-2006GMC Safri, GMC Savanna, GMC Sierra 2003-2006GMC Sierra Denali, GMC Yukon & XL 2003-2006GMC Yukon Denali, GMC 1500HD 2003-2006GMC 2500HD, GMC W3500 2003-2006CON AMPLIFICATORE