Question about 2000 Pontiac Grand Prix
It could be the Blower Motor Fuse or Relay and they should be located in the cabin Fuse Box, if both are OK, it could be the blower motor resistor, located on the blower motor housing, it is the part where the electrical connector goes into and it's got a pigtail connector that goes to the blower motor, it is attached to the blower housing by three screws. Here are some pictures for better identification.
CONNECTOR FROM RESISTOR TO BLOWER MOTOR
SIheat fan stopped working..is it a fuse? - 1kbron_7.jpgn>
To test it, make sure the electrical connector has voltage when the FAN is on, if voltage is present, it means relay and fuse are OK, plug the connector into the resistor and check voltage on the pigtail connector, if voltage is present, the resistor is OK, voltage varies according to the speed selected. To check the blower motor, apply 12 volts and ground the the motor terminals, it should kick in in Hi speed, if not Replace Blower Motor.
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Posted on Nov 09, 2010
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Posted on Jan 02, 2017
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