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It is false that the stat ignition switch position only activates the starter motor.
Yes it can. it is only a switch.
Bad resistor at the blower motor? Bad blower motor switch?
Remove the cover, will you see an assembly switch,looks like plastic screws. There is an up switch and a down switch screw,there are contacts on each screw, when the up contact reaches the up limit contact it tells the opener to stop and that when the button is pushed again to travel down. You should read your manual and look at the diagram of the opener to make sure all the parts are there and nothing is broken or missing. If something is broken it should be in the bottom pan. If everything is ok then it is your circuit board. If you do not have the manual,you can usually get it online from the MFG.
possibly a blower motor. or switch
either the switch or the fan motor
the switch is on the door panel approx four inches from the window, this is the only switch that sends power to the window regulator motor (window motor).
replace the blower motor switch
The blower motor speed resistor is burned out.
the motor is ok if it will go in at least one direction....most likely the switch is bad
It is probably a bad motor, or a loose ground going to the motor. And there is the possibility of a bad switch, if it only occurs at one speed.
A letter opener is the only name that it has; letter opener is a singular, common, compound noun.