FITMENT-1: The HVAC heater blend door actuator is compatible with following models - Replacement for Buick Rainier 2004-2007 // Replacement for Chevrolet Trailblazer 2003-2009 // Replacement for GMC Envoy 2003-2009 FITMENT-2: The HVAC heater blend door actuator is compatible with following models - Replacement for Isuzu Ascender 2003-2008 // Replacement for Oldsmobile Bravada 2003-2004 // Replacement for Saab 9-7X 2005-2009 PART NUMBER: 604-110, 15-73596, 604110, 1573596, 52402610, 89018675, 89018384 EASY TO INSTALL: The HVAC heater blend door actuator is easy to be replaced in your vehicle. Professional installation is highly recommended ATTENTION: Please read our description and pictures carefully to check details about the HVAC heater blend door actuator, it must be completely the same, or it will not fit your vehicle. Please carefully confirm the fitment with our description Compatible with BUICK RAINIER 2004-2007 Compatible with CHEVROLET TRAILBLAZER 2003-2009 Compatible with GMC ENVOY 2003-2009 Compatible with ISUZU ASCENDER 2003-2008 Compatible with OLDSMOBILE BRAVADA 2003-2004 Compatible with SAAB 9-7X 2005-2009