Question about 2002 Pontiac Grand Prix

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Blower control on heat/ac only works on highest level.

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  • 55 Answers

Your blower motor resistor, located under the passenger side dash down by the floor next to the blower motor, This will cause the motor to only work on high speed. Gm pt#89019101 around $60

Posted on May 12, 2009

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Posted on Jan 02, 2017

  • 295 Answers

SOURCE: blower for ac/heat only work on lower 3 levels.

Check the blower motor resitor. Use a 12v test light at the switch and notice the bulb brightness change as you switch settings.. Probably have a bad blower resiter.

Posted on Jul 07, 2009

  • 1118 Answers

SOURCE: The blower for the ac/heat only works on the

Sounds like the blower motor resister is bad, it regulates the speeds of the blower motor, it should be located somewear around the blower motor, 2 screws hold it in the heater box and it has a electrical plug to it.

Posted on Sep 30, 2009

  • 116 Answers

SOURCE: Heat / AC only come on when blower is set to highest setting (4)

Not exactly sure if it's an easy fix without looking at it , but is seem to be the switch is going out, usually have to take dash trim off to expose the bolts to get the switch housing out. Then the switch will come off from the back side , and you'll have to unplug the wireing plug from it, to replace it.

Posted on Oct 06, 2009

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It is located under the glove box, way in the back of the passenger foot area. You'll need to remove 2 screws with a 7mm socket, and remove the plastic cover that covers the blower motor and another component box that I think controls the passenger airbag. After removing the plastic cover you'll need to side that passenger airbag module to the right so it pop off its mounting bracket and move it out of the way. That will give a better view of the blower motor. I highly recommend you also remove the blower motor itself because the Blower Motor Resistor is located behind it. I think you'll need a 5mm or 5.5mm socket to remove the 3 screws that hold in place the blower motor and 2 more screws for the Blower Motor Resistor... It's a cramped location to work in but if you have all the tools and enough lighting then it shouldn't take more than 30-60 minutes to do. The Blower Motor Resistor costs about $19-$25. Good luck

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Not exactly sure if it's an easy fix without looking at it , but is seem to be the switch is going out, usually have to take dash trim off to expose the bolts to get the switch housing out. Then the switch will come off from the back side , and you'll have to unplug the wireing plug from it, to replace it.

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