I have a 2002 Buick Regal with a coolant leak. Two things have been done so far, both of which I believe were needed. First the lower intake manifold gasket was replaced. Secondly, at a later date, I had the heater core replaced. My question…
Will not hold coolant.
You will need to have a pressure test performed on the cooling system. This will tell you exactly where the leak is. Then it will just be a matter of having it fixed.