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The heat isnt working on 2002 Saturn Vue

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Well the heat isnt working you try to turn it on nothing happens. I changed the motor and the resistor an nothings changed. Im trying to find what else it could be, its real cold here
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If the blower doesn't work at all, it has to be a switch, resistor or motor issue. It can also be wiring associated with the system - typically at the resistor where all the current passes through. Check the connector and terminals for burning and melting marks.
the02 saturn vue is notorius for having oil in the coolant system which inturn can clog up the heater core if too much is in there try taking ogg the lower heater core hose and blowing air through the hose this probably will solve your problem it did for me