Question about 2001 Chevrolet Astro

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Fan control knob

Control knob does not work on any speed level

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  • Anonymous Dec 27, 2008

    I have a 2003 chevy silverado half ton pickup with a fan control knob that only works when it is turned up to 4 or 5. 1 2 and 3 will not work. Need help diagnosing the problem and possible solutions. Would like to know what is wrong before taking it to a shop for repairs.



  • Ricopr Feb 08, 2009

    my problem is that when I turn the knob to any speed from low to high

    the air come out from the top of the dash board as if I turned the setting to defrost. when the setting is on to circulate air at my feet. Again the air flows out of the defrosting vent abouve the dash board. Can someone relate to me what causes this problem.

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  • 319 Answers

Ballast Resistor is bad. Replace @ the heaterbox on the firewall under the hood on the pass. side. it has a 4 pin connection running to it.

Posted on Feb 28, 2009

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1 Answer

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