Ok so I have a 2004 chevy Tahoe z71. It was getting hot this afternoon so I went and got a new thermostat and housing and repalced them but it is still over heating. I know that the Ford Explorer sport that I used to have had two thermostats is this the case with my Tahoe? And if anyone has any ideas what could still be causing the over heating please let me know. I am a vet and live off my disability and don't have the money to be replacing part after part trying to fix it.