Why is car coolant pouring out of the overflow tube?
I have a 1999 Cadillac Deville. Two weeks ago, the car was losing coolant
on the passenger side towards the front of the car. It was on the radiator
and the air deflector. The mechanic said it was the radiator. It was replaced.
Today, the car overheated, and the coolant was boiling and coming out of the
overflow tube on the coolant reservoir cap straight to the ground. I was told
that with the northstar engine, it was likely the head gasket. Is that the only
possible culprit?