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Should be located in a removable housing at the engine end of theupper radiator hose Drain about 1 gallon of coolant from the radiator Remove this housing Note how thermostat is installed Clean both surfaces Replace thermostat and gasket Replace housing Re-fill coolant slowly to prevent an airlock Start engine and look for leaks Run engine to normal operating temperature with heater on Re-check coolant level

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16y ago
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Q: How do you change thermostat in a 2001 gmc jimmy?
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