2004 core keeps over heating I have replaced the thermostat. What is a simple way to check the head gasket

What is your question?

I can usually drive it a couple of miles before it over heats Also replaced the water pump. Should the fan be running if the car is over heating!

What makes this problem better or worse?

Keeping fluids in it makes it better

How long has your 2004 Cadillac XLR had this problem?

About a week