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has it still got a carb if so remove air cleaner stand at rh fender look at carb should see round black cover with electrical conn 3screws in triagular pattern loosen remember markings on edge of housing put new t stat on line up marks as old unit Carburators are not and have not been used on cars since the mid 80's. Drain the radiator into a container. At the engine end of the upper radiator hose is the thermostat housing. Remove the hose,thermostat housing and thermostat. Clean the surfaces,install the thermostat and gasket or "O" ring seal and the housing. Refill with antifreeze.

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Q: How do you check and replace a thermostat on a 1993 Chevy Caprice?
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