Radiator fans don't spin
 

My car overheats in the summer months when it is hot outside and the car is not moving. The problem is the radiator fans don't spin at all. I went and replaced the fan control module from pick and pull, which kind of fixed the problem where I noticed the radiator fans spinning, but now they don't spin again.

Is there something I am missing? Could it be related to coolant mixture at all. I replaced it like 2 years ago? I also have heard of a fan relay that could also be the culprit but I don't know.