Possible causes could be, fuse, relay, sensor, blower motor or electrical connector.
can be the heater blower motor resistor located in either the ductwork or under hood near blower motor on firewall
Where do you find the blower motor relay on a 1996 Plymouth Voyager?
Go to an auto parts store and ask them to link up to the Jeep's computer.
If you have checked the blower motor and it does function when power is applied then I would suspect the Blower Motor Resistor Pack is defective. It is also possible the blower motor speed control is bad, but highly unlikely.
my infinity g-20 blower not working
Check the blower motors ground and power in the truck and the blower motors resister......
have you checked the fuse if so then you will need to replace the resistor for the blower hig and low dettings have you checked the fuse do you have 12 volts to blower if so then you will need to replace the resistor for the blower replace the blower motor
If you are referring to the blower motor squealing, then I would suspect the blower motor bearings have failed.
Have your blower motor resistor or blower motor checked out
crown Victoria blower not working and head lights.
The blower motor can be checked with an ohm meter to test continuity. Also, use a volt meter and check to insure that the resister and motor are actually getting power. a broken wire or bad plug connection will cause loss of power.
Have you checked to see if your 12V dc relay under the hook is working properly?