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The 1986 Pontiac Firebird fan relay switch can be found on the back of the fan motor. The relay switch is connected to the fan motor by two retaining screws.
replace the switch that tells it what temperature to kick on.
"How do you replace the fan control switch on a 2002 Grand Prix?"
Which fan motor?
its the electric fan thermo switch
wire yourself a toggle switch between the battery and fan and run into passenger compartment
How to change bulb behind switch of fan Toyota Avenses
Change blower fan control switch in the dash
Why are you replacing the switch? If the fan works only on high speed, replace the fan resistor. There was a TSB for this.
How to change blinker switch in a 1994 Firebird ?
your ac fan motor is probably bad (the motor has different speeds, one speed maybe bad), or swicth is bad (alot cheaper to fix) The blower high relay on the top of the evaporator under the hood by the firewall passenger side is not working, may need to replace it.
The radiator fan sensor switch or the radiator fan motor are at fault (maybe even both). Wire the fan motor direct to see if it will run, if it does, replace the sensor switch. If the fan motor doesn't run, replace the fan motor before you buy a new sensor. If after replacing the fan motor, the fan still doesn't run, then replace the sensor.