Question about 2000 Chevrolet Silverado 1500

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2000 Chevrolet Silverado 1500 My interior fan keeps blowing the variable speed resistor in the vent and I'm left with only high speed. I have replaced this part twice now and for some reason it still gives me problems. Is there something I can do to keep this from failing?

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Check the resistor harness connector for damaged or spread apart terminals replaced many for your concern

Posted on Nov 27, 2009

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Have you replaced the blower motor a shorted motor can fry resistors in as lil as an hour and the motor appear to be good

Posted on Feb 20, 2009

  • james Feb 20, 2009

    have you replaced the blower motor a shorted motor can fry resistors in as lil as an hour and the motor appear to be good

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How do you fix a fan speed switch that won't blow until it's on 4 or 5 in a 2004 z71 Chevy Silverado 1500


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Thank you,
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1 Answer

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The blower resistor needs to be replaced, that is why your only have the highest setting working since the blower speed resistor's are being by past. The other thing that happened is since the blower is always on high, the high current most likely burnt out the blower relay and ir stuck in the close loop and needs to be replaced. pay attention to the wire harness, since it got hot enough to damage the relay, it may have damaged the wire harness to and fire may start due to a short. Good luck and hope this helps.

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