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It take a special tool to release the hose connector. I went to O'Rielly and they show me the Dorman Quick Disconnect replacement part ($6.29) and the Disconnect tool set ($19.99). It took the 3/4" disconnect tool to release the broken hose connector on my GMC truck. Snap on the 3/4" disconnect tool onto the heater core tube, then slide the tool into hose connector to release the dog ears inside the connector. Then pull the connector off. It took me about 30 second to remove the disconnect once I had the connect tools.

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12y ago

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