SOURCE: Heater fan has sto pped
First look to see if you have a fuse for the blower motor...then you will want to disconnect power to the fan an jump 12 volts to the fan motor to see if it works...if ok, then there is a speed control resistor that sometimes goes bad located on the heater assembly...It is usually right past the fan so the fan can keep it cool and has 4 or more wires on it. if all else ok then last would be the switch inside car
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