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The knob marked "fan" controls the fan speed. The knob marked "heat" controls the amount of heat the fan will blow out.
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.
Depending on what type of fan, the fan control switch can be located on the wall for a ceiling fan. Each type of fan will have a different location for the fan control switch.
Change blower fan control switch in the dash
"How do you replace the fan control switch on a 2002 Grand Prix?"
The fan control switch is located in the bottom driver side of the radiator if your fan does not turn on when the car has heated up to temperature unplug the fan switch and jumper the plug not the switch side if the fan comes on the switch is bad.
no switch,fan control is determined by the engine control unit with input from the coolant sensor
Probably not, since a volume control switch is designed for extremely low current measured in fractions of a watt, while a dimmer switch is typically capable of handling several hundred watts.
front climate control has two switches, front fan and rear fan control, on the rear fan control - turn the switch to the second notch usely marked rear fan control (aux - control) mode.
Most likely it is the switch, you need to have the fan control knob/switch replaced. The contact may have worn out over time.
Most likely either the switch or the motor is defective.
First check your fuses. Next check your fan to see if it is working and if the wires are hooked up. The fan is located in the engine compartment on the passenger side. If the fan tests good it is your heater relay located on the heater core cover or the fan switch on the heater control. The heater control is in the passenger compartment. The fan switch will usually work on at least one setting.