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2004 Chevrolet Impala Question: heater problems

 

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brooke2631, 3.4L V6, Gainesville, GA, December 02, 2009, 22:03
 Rookie

how do you know if it is the heater blower or the heater blower resistor?

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  • Answer #1

    Bret Bodas from RepairPal Test Shop, December 03, 2009, 07:53
     Master

    Generally when the blower motor resistor fails, the blower fan will work on the highest setting and not the others. If the fan doesn't work at all, check for power and ground signals to the motor and go from there.

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