Pontiac Repair: heater fan will not blow, blown fuse, heater fan

Question
my heater fan will not blow on any four speeds. any ideas ?

Answer
Hi Margaret:

well it can be a few things. I depends on what modle car this is as to what is most common for it to stop working. The most common thing is a blower resistor that is what regulates the speeds od the blower motor. That could be burned out or a blower motor that is bad. those the the 2 most common issues but it could be other thing like something as simple a a blown fuse or even a control head that the switch has gone bad..