My son has a 2002 chevy cavalier ls 2.2l with an electric fan which has stopped operating. I have a couple questions that I hope someone can help with.

1) Where is the sending unit for the radiator fan located and is there a way to check output

2) If I replace the sending unit should I also replace the connectors and the module (I am assuming there is a computer module somewhere in the system to catch codes).

3) When is it going to warm up........lol

Thanks in advance...jjek