Quote Originally Posted by Powers25 View Post
What else besides my radiator could cause the overheating?
You ain't gonna like the answer.

First check the purge line to be sure it is not clogged. That's free and easy. If that's OK, borrow a block test kit from AutoZone or such and just pay for the test fluid. Run the test and pray to the Northstar Gods, but be prepared for the worst (HG failure).