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Water not circulating

(1999 Chevrolet Silverado 1500)
in Basin, WY on February 02, 2011
My 99' chev. silverado recently overheated.I replaced the thermostat,Filled it with antifreeze but water is not circulating,Do u think it could be the water-pump?
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Popular Answer
on February 04, 2011
It's possible the impeller is loose on the shaft. Pull the water pump and check the impeller if nothing else works.
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