Question about 2000 Pontiac Grand Prix

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Heat fan stopped working..is it a fuse? - 2000 Pontiac Grand Prix

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Hi!!
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.
FRONT VIEW heat fan stopped working..is it a fuse? - 1kbron_5.jpg
CONNECTOR FROM RESISTOR TO BLOWER MOTOR 1kbron_6.jpg
SIheat fan stopped working..is it a fuse? - 1kbron_7.jpgn> 1kbron_7.jpg

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.
A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Thank you for using FixYa.

Posted on Nov 09, 2010

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