{"product_id":"dorman-904-624-hvac-pressure-switch","title":"Dorman 904-624 HVAC Pressure Switch","description":"\u003ch2\u003eOverview of Dorman 904-624 HVAC Pressure Switch\u003c\/h2\u003e\u003cp\u003eThe Dorman 904-624 HVAC Pressure Switch is designed for specific GM vehicles including Buick, Chevrolet, GMC, Oldsmobile, and Pontiac models. This pressure switch is engineered to monitor refrigerant pressure in R134a air conditioning systems, ensuring proper HVAC operation and system protection.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOperates at 13 volts for reliable electrical performance\u003c\/li\u003e\n\u003cli\u003eCompatible with R134a refrigerant systems\u003c\/li\u003e\n\u003cli\u003ePressure limits: closes at 26 psi and opens at 46 psi\u003c\/li\u003e\n\u003cli\u003eMaximum pressure rating up to 500 psi\u003c\/li\u003e\n\u003cli\u003eDurable metal housing with screw-on mount type\u003c\/li\u003e\n\u003cli\u003eBlack circular female connector with two male blade terminals\u003c\/li\u003e\n\u003cli\u003eThread diameter of 7\/16-20 for secure installation\u003c\/li\u003e\n\u003cli\u003eAmperage rating of 4 amps for system safety\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman 904-624 HVAC Pressure Switch is a specific fit replacement part designed to maintain optimal pressure levels within the air conditioning system of select GM vehicles. It features a robust metal housing and a screw-on mount type that ensures a secure and stable installation. The switch operates at 13 volts and is calibrated to close at 26 psi and open at 46 psi, providing precise control over the refrigerant pressure in R134a systems. Its maximum pressure reading capability of 500 psi allows it to handle high-pressure conditions without failure. The black circular female connector with two male blade terminals facilitates a reliable electrical connection, while the 7\/16-20 thread diameter matches OEM specifications for a proper fit.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis HVAC pressure switch is compatible with a range of GM vehicles, including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBuick Regal\u003c\/li\u003e\n\u003cli\u003eChevrolet Blazer, C1500, C1500 Suburban, C2500, C2500 Suburban, C3500, Silhouette, Trans Sport\u003c\/li\u003e\n\u003cli\u003eGMC Jimmy, K1500, K1500 Suburban, K2500, K2500 Suburban, K3500, Yukon\u003c\/li\u003e\n\u003cli\u003eOldsmobile Silhouette\u003c\/li\u003e\n\u003cli\u003ePontiac Trans Sport\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse this part to maintain proper air conditioning system pressure and prevent system damage in these specific models.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by the Dorman 904-624 HVAC Pressure Switch\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents compressor damage caused by abnormal refrigerant pressure\u003c\/li\u003e\n\u003cli\u003eStops system operation when pressure is too low or too high\u003c\/li\u003e\n\u003cli\u003eHelps maintain consistent cabin cooling performance\u003c\/li\u003e\n\u003cli\u003eProtects against electrical faults with a 4 amp amperage rating\u003c\/li\u003e\n\u003cli\u003eEnsures accurate pressure monitoring in R134a refrigerant systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstallation requires a screw-on mount with a 7\/16-20 thread diameter. Ensure the vehicle’s air conditioning system is depressurized before removal and installation to avoid injury or damage. The black circular female connector and two male blade terminals should be connected securely to maintain proper electrical contact. Verify compatibility with your specific Buick, Chevrolet, GMC, Oldsmobile, or Pontiac model before installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 904-624 HVAC Pressure Switch is constructed with durable metal housing and tested for reliable performance under typical operating conditions. Warranty information is available through Dorman and should be confirmed at the time of purchase.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52111224209589,"sku":"BKKY-904-624","price":45.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_904624_Fro.jpg?v=1775160518","url":"https:\/\/www.partcatalog.com\/products\/dorman-904-624-hvac-pressure-switch","provider":"PartCatalog","version":"1.0","type":"link"}