I just brought a 99 cadillac deville and its overheating?

Marquita

New member
The temp is about 239 I took it to a auto repair shop and and they did a pressure test on it and there were not leaks and also a chemical test on it and it was normal and the oil is not a milky substance, but the guy is saying that it is the head gasket. Please help!!!!!!!!
I have not put the thermostat on because he said that he wanted to do the pressure test first to see if there are any leaks. But there are no leaks but he keeps talking about the head gasket. should i just have the thermostat put on?
 
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