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How do you bleed the air out of the system after you change the thermostat on a 2004 Chevrolet Impala?
Wiki User
∙ 14y ago
There is a small brass valve on the top of the thermostat housing where it attaches to the top radiator hose. Loosen it and then fill the radiator until coolant comes out of the valve and then quickly close it. This is only for an impala with the 3.8 liter engine though I believe there are two valves on the 3.4.
Wiki User
∙ 14y ago
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