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Re: Where is the heater blower motor resistor loacated on...
It is under the dash next to where your passenger feet would be on the floor board.right above a person feet on the pasenger side. Also sounds like the switch in the dish is going out, if only working on high (4). I would replace switch first. Get one out of junk yard at half price.
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There might not be any relay, Mary - it might be wired directly from the switch to the blower motor, although the lower blower speeds may go through a speed-reducing resistor pack to get there. If that's true, the resistor pack will be somewhere in the heater plenum, probably near the passenger's foot area.
If the blower doesn't run at all, check for voltage at the blower motor with a meter or test light, switch in all positions, keyswitch ON. The blower motor may have failed.
did all speeds stop working or does it have high only? if none of the speeds are working then you need to verify you are getting voltage to the motor, if you have voltage the motor is out, no voltage check the heater control relay. if it blows only on high then its the blower motor resistor located in the duct work under the dash around the glove box area
well the growling noise is more than likely a worn bearing in the blower motor it would be better to replace the whole motor, and on the fan speeds the blower motor resistor is the cheaper solution to take and more likely however if the resistor doesnt fix it then look at the control unit in the dash as the problem but like i said more than likely the resistor will fix the problem