The blower motor is the 12-volt electric fan that provides the air flow in the vehicle Heating and Air Conditioning System. Most cars have one blower motor installed under the dash. SUVs and minivans with a separate Rear Heating and Air Conditioning System have a second blower motor installed in the rear HVAC unit. The speed of the blower motor is often controlled by a blower motor resistor. A failed blower motor may become noisy or stop working altogether.
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