1994 GMC Vandura 3500 Q&A

1994 GMC Vandura 3500 Question: Over-heating and coolant blow-out through overflow

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? -
Answer 1
head gaskets Roy -