Check the resistor if it only works on high Check the resistor if it only works on high Check the resistor if it only works on high
You have a bad blower motor resister.........
Faulty Function selector switch. Consider replacement.
It has a bad "Blower Motor Resistor" The fan switch itself is fine.
there are resistors located by blower motor. could be open. they control blower speed.
Short in the circuit somewhere. Try unplugging the blower motor, closing the circuit with a test lead or test light, and seeing if it blows then. If not, the problem would seem to be in the blower motor itself.
it's a problem with the blower motor resistor
Replace the blower motor also.
A glass blower is a person that blows glass.
It will be located somewhere in the path of the air that the blower motor blows.
My s-10 does the same thing. I have found out that it only blows when I place the blower motor in speed 4. If I unplug the blower motor and put the switch to 4 it does not blow. I have recently replaced the blower motor and resistor and this had no effect. Hope this helps.
As for why it blows only on the high speed you most likely will have a bad blower resister and for the noise, it could be a bad blower motor, bad blower wheel or trash that is stuck in the blower wheel or housing.......
blower motor resistor thermal limiter is blown. Replace the blower motor resistor.