Question about 2003 Chevrolet Impala

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Antifreeze is leaking from around my radiator cap on my 2003 chevy impala and I think it is the cause for my car overheating but my radiator cap is not hot, What could be wrong?

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More than likely it is a bad radiator cap. the pressure seal is leaking on cap.

Posted on Nov 05, 2010

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Try to replace a new rad. cap-if still leaking & original radiator-then the tanks are wearing down,try putting some stop leak in it momentary-radiator may need to be replaced-not that big of job,you can do yourself-shops will charge $$$$$ hope that helps-good luck!

Posted on Nov 05, 2010


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You may have an air pocket in the engine block. Make sure it is bleed properly. Also, some water pump impellers have been known to breakdown, made of plastic. A head gasket leak can also appear to be a boiling over condition.

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the best thing to get is the Haynes manual for your car at advanced auto or autozone or somewhere like that and the book will tell you how to take everything apart and put it back. i think the manual is about $16.00

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