i have a 96 camaro 3.8 v6 5 speed. It just recently just started to overheat. I have replaced the water pump, radiator, and thermastat within the past 6months so i know it is none of those. Any ideas of what else it could be? Thanks

 

Well this may sound dumb but is it actually overheating?...or is it your gauge?

 

Also, have you checked the fans to see if they are running when overheating?

 

If you have access to an exhaust gas analyzer, hold the probe just above the radiator fill and take a reading. ANY HC or CO reading means ..... headgasket.