2012 Chevy Cruze LT 1.4
All of the sudden the fan would not cut off runs continuously, I had to disconnect the negative cable to shut off (was concerned about draining the battery overnight) what could be the cause? No MIL or DTC

 

What does the temperature gauge read? Is it normal? It could be a bad relay.

 

This is a common problem....i surmise that if you had the codes checked, you would get P0597/P0598--has everything to do with chevy switching to a thermal housing instead of a simple thermostat. If you look online for that code you will see a lot of chevy's are having problems with this. I'm currently having this problem and "patiently" waiting for some Chevy Rep to actually contact me. I have to pass a emissions test for my Chevy this month, but I can't pass while experiencing these codes.