Depends on the year. You could try the resistor first since it is the cheapest. If not that, then check the fuses, relays and wiring to the control head. Then lastly, change the motor.
the blower motor resistor should be behind the glove box. just unscrew the two screws and that should be it.
The blower motor speed resistor is burned out. The high speed function bypasses the resistor. The speed resistor is generally located near to the blower motor.
The blower motor resister is located just below the blower motor to the left attached to the housing.........
The blower motor resistor is located just above the blower motor under the hood. It should have an electrical connector plugged into it and some screws holding it in place.
The resistor is under the passenger dash just left of the blower motor
Held in by two screws in a housing just to the left of the blower motor housing.
The blower motor resister is located just to the left of the blower motor on the passengers side right below the blower motor return air tube.......
It is either the blower motor control switch or the blower motor resistor pack. More than likely it is the resistor pack. It must be replaced or just live with it until it fails completely.
The blower motor resistor location on a Chrysler 300M is on the passenger side of the vehicle. It is on the floorboard next to the inside firewall, just in front of where the passenger sits.
The heater blower motor resistor should be above the vent, behind and just below the glove box. It should have a three prong connector.
Need to replace the blower motor resistor which is located just under the passenger side dash. 2 bolts on either side will remove it. Cost of replacement resistor is about $20.