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Should be located in housing at engine end of upper radiator hose. Drain about 1 gallon of coolant from radiator Remove this housing Make note how thermostat is installed Clean both surfaces Replace thermostat and gasket Re-fill coolant slowly to prevent "airlock" Start vehicle check for leaks Run vehicle to normal operating temperature with heater on Check coolant level

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โˆ™ 2007-05-11 15:31:17
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Q: How do you change the thermostat on a 1994 Buick Roadmaster?
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