Question about 2002 GMC Sierra

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The fan motor for defrost/air does not work now unless it is on 5, the highest number. Is this the switch or the motor that is not working?

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  • 34 Answers

You need to replace the blower motor and the blower motor resistor to correct you problem

Posted on Jan 02, 2011

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1 Answer

Nothing coming from the vents when you turn on the a/c, heater, or defroster


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Check it with a test light or Multimeter for power to blower motor first, with switch on high. If no power to motor, problem is elsewhere. Here's a link that will help you. Click on the pictures to expand.

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528008ac7f

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