plastic cover for heater motor
The year, make and model info would help but generally the heater blower motor resister is located close by the heater blower motor.
The heater blower resister is under the dash on the passenger side. It is inserted into the side of the blower motor case.
The heater motor speed resister is burned out.
resister is located on the plenum next to the blower motor under the hood
I found the resister, it is a small module held by 2 small screws on the base of the heater blower behind the glove box.
heater resister is bad
how do you change heater blower resister merc a class
The most likely problem with the heater blower on your 2003 Sable is the blower resister. The resister can go bad and cause you to only have one speed.
Take out the glove box there you will see the heater motor the back of that is the resister you will need to get on yyour back to reach up to it.it should slide out
its located under the scuttle panel next to ur heater motor.
the heater fan resistor is located under glove box beside the fan blower.