u need a new control button switch the button that has 3 nobs on it that control temp .i had same problem only works on 5 right.
Check for a bad blower resistor at blower motor
Blower switch and connection had a melt down.
the resistor for the blower motor is busted blower works on high with out it
blower resistor
It's the ignition switch. Replace it. All will be well.
There is a resistor near the blower that is bad, known cause is high speed only.
If you are saying the Blower Motor only works on high, then your problem is a defective Blower Motor Resistor Pack. Replace it.
Blower resistor pack broken?
A blower motor that only works on high is normally caused by a defective Blower Motor Resistor Pack. DRL, do not have a clue.
If the blower only works on high the blower resistor is most likely the problem and should be replaced. On rare occasions if the car has blown the resistor more than once the blower motor shouuld be replaced.
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
The blower motor speed resistor is burned out.