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Replacing a thermastat on a 2004 chevy impala

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Ok. It's fairly straight forward --
Make sure engine is cool, locate the hose leading from radiator to the top of the engine, you should find a housing with two bolts one on each side. remove the hose, bolts and housing, clean all smooth surfaces with scraper then sand paper to remove all old gasket material, replace thermostat, seal with gasket sealer and torque bolts back on to specification (typically a good solid snug would do)
Best regards
Ck

Posted on Mar 12, 2011

  • Carl Kay Mar 12, 2011

    oooops, don't forget - to be sure: you will need to drain the coolant before removing the bolts tot he thermostat housing... open the radiator cap, unscrew the drain plug and drain the coolant into a clean pan and save it for re-use.

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