Welcome to the board, Grant.
Chances are it's a simple and inexpensive fix. The t-stats and radiator caps on these cars really ought to be replaced every spring, imho. It's not hard to do yourself, and the parts should cost you less than $20 total at your local Autozone or the like.
Keep your eyes and ears posted, as we have a tech day coming up in the next couple of weeks. Either that, or one of us might be able to help you fix the problem one afternoon or evening - it doesn't take long to do.