{"product_id":"dorman-604-174-hvac-blend-door-actuator","title":"Dorman 604-174 HVAC Blend Door Actuator - Left Main","description":"\u003ch2\u003eOverview of Dorman HVAC Blend Door Actuator for Cadillac STS\u003c\/h2\u003e\u003cp\u003eThe Dorman 604-174 HVAC Blend Door Actuator is designed specifically for Cadillac STS models, providing reliable control of your vehicle's climate system. Featuring a rotary switch activation type and durable plastic construction, this actuator ensures precise airflow regulation within the HVAC system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eRotary switch activation for smooth and accurate operation\u003c\/li\u003e\n\u003cli\u003eDurable plastic material designed for long-lasting performance\u003c\/li\u003e\n\u003cli\u003eCompatible with Cadillac STS HVAC systems\u003c\/li\u003e\n\u003cli\u003eIncludes one actuator per package\u003c\/li\u003e\n\u003cli\u003eOEM-quality replacement part number 604-174\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis HVAC blend door actuator from Dorman is engineered to replace the factory unit in Cadillac STS vehicles. The actuator uses a rotary switch activation type, which allows for precise adjustment of the blend door position, controlling the mix of hot and cold air inside the cabin. Constructed from high-quality plastic, the actuator is built to withstand the temperature variations and mechanical stresses typical in automotive HVAC systems. The part number 604-174 ensures compatibility and easy identification for maintenance or repair tasks.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Resolved\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores proper airflow temperature control in Cadillac STS HVAC systems\u003c\/li\u003e\n\u003cli\u003eEliminates inconsistent or stuck blend door movement\u003c\/li\u003e\n\u003cli\u003eResolves issues with uneven cabin heating or cooling\u003c\/li\u003e\n\u003cli\u003eFixes HVAC noise caused by faulty actuator operation\u003c\/li\u003e\n\u003cli\u003eAddresses failure of rotary switch activation in blend door control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstallation of the Dorman 604-174 blend door actuator requires basic automotive HVAC knowledge and tools. It is recommended to disconnect the vehicle battery before beginning to avoid electrical issues. Carefully remove the dashboard panels to access the blend door actuator location in the HVAC housing. Ensure the actuator is properly aligned with the blend door shaft before securing it in place. After installation, test the HVAC system to confirm smooth operation and correct temperature control.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty Information\u003c\/h2\u003e\u003cp\u003eDorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 604-174 HVAC blend door actuator undergoes quality checks to ensure reliable performance in Cadillac STS vehicles. This part is backed by Dorman's limited warranty, providing coverage against defects in material and workmanship under normal use.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":44017114382517,"sku":"BKKY-604-174","price":55.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_604174_Fro.jpg?v=1775009033","url":"https:\/\/www.partcatalog.com\/products\/dorman-604-174-hvac-blend-door-actuator","provider":"PartCatalog","version":"1.0","type":"link"}