{"product_id":"four-seasons-37539-hvac-blend-door-actuator","title":"Four Seasons 37539 HVAC Blend Door Actuator - Lower Main","description":"\u003ch2\u003eReliable HVAC Blend Door Actuator for GM Trucks and SUVs\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Air Door Actuator 37539 is designed to restore precise airflow control in your vehicle's HVAC system. Engineered for select Cadillac, Chevrolet, and GMC models, this actuator ensures smooth operation of the blend door for optimal cabin comfort.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFemale door linkage for secure connection\u003c\/li\u003e\n\u003cli\u003eThree mounting ears for stable installation\u003c\/li\u003e\n\u003cli\u003eFive terminal pins for reliable electrical connectivity\u003c\/li\u003e\n\u003cli\u003eSpecifically designed as an HVAC air door actuator\u003c\/li\u003e\n\u003cli\u003eCompatible with multiple GM trucks and SUVs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details and Specifications\u003c\/h2\u003e\u003cp\u003eThis HVAC blend door actuator from Four Seasons features a female door linkage that interfaces directly with the blend door mechanism, providing accurate movement and control. The actuator mounts securely using three mounting ears, ensuring a firm fit within the HVAC housing. Equipped with five terminal pins, it offers dependable electrical connections for consistent performance. The part number 37539 is engineered to meet the exact specifications required for proper fit and function in vehicles such as the Chevrolet Silverado 1500 HD, GMC Sierra 2500 HD, Cadillac Escalade EXT, and others within the compatible model range.\u003c\/p\u003e\u003cp\u003eThe Air Door Actuator product line by Four Seasons focuses on delivering precise control of HVAC airflow doors, helping maintain the desired temperature and air distribution inside the vehicle cabin. This actuator is part of that line, designed to replace faulty or worn blend door actuators in GM trucks and SUVs.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Common Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCadillac Escalade and Escalade EXT\u003c\/li\u003e\n\u003cli\u003eChevrolet Avalanche 1500 and 2500\u003c\/li\u003e\n\u003cli\u003eChevrolet Silverado 1500, 1500 HD, 2500, 2500 HD, and 3500\u003c\/li\u003e\n\u003cli\u003eGMC Sierra 1500, 1500 HD, 2500, 2500 HD, and 3500\u003c\/li\u003e\n\u003cli\u003eChevrolet Suburban 1500 and 2500, Tahoe\u003c\/li\u003e\n\u003cli\u003eGMC Yukon, Yukon XL 1500 and 2500\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon HVAC Issues This Actuator Resolves\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eInconsistent or incorrect cabin temperature control\u003c\/li\u003e\n\u003cli\u003eFailure of blend door to move or respond\u003c\/li\u003e\n\u003cli\u003eUnusual noises from the HVAC system blend door area\u003c\/li\u003e\n\u003cli\u003eAirflow stuck in one position or direction\u003c\/li\u003e\n\u003cli\u003eIntermittent HVAC operation or electrical connection problems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Four Seasons Air Door Actuator 37539, ensure the female door linkage aligns properly with the blend door shaft. Secure the actuator using all three mounting ears to prevent movement or vibration. Verify the five terminal pins are fully seated in the vehicle’s wiring harness connector to maintain electrical integrity. It is recommended to test the actuator operation before reassembling the dashboard or HVAC housing to confirm proper function.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eFour Seasons manufactures the Air Door Actuator 37539 to meet OEM standards for fit and function. This part undergoes quality control testing to ensure durability and reliable operation in demanding automotive environments. Please refer to Four Seasons’ warranty policy for specific coverage details related to this HVAC blend door actuator.\u003c\/p\u003e","brand":"Four Seasons","offers":[{"title":"Default Title","offer_id":44597084389557,"sku":"BBRN-37539","price":52.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FS_37539_Fro_78945d45-a1ba-4e5a-a513-e00e30ad1e60.jpg?v=1775068119","url":"https:\/\/www.partcatalog.com\/products\/four-seasons-37539-hvac-blend-door-actuator","provider":"PartCatalog","version":"1.0","type":"link"}