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Over-heating and coolant blow-out through overflow

(1994 GMC Vandura 3500)
in Valley Stream, NY on July 14, 2010
Our van will overheat frequently and VOMIT out anti-freeze through the overflow. Very annoying. I don't think it's the head gasket, as it doesn't do it constantly.... Thermostat? Water pump? Something else?
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Popular Answer
on July 14, 2010
head gaskets

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