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Posted on Oct 20, 2010
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No power to heater fan on settings 1 to 4 but power still works fan on number 5 setting

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Freddy

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  • GMC Master 1,311 Answers
  • Posted on Nov 03, 2010
Freddy
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Joined: Sep 06, 2010
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Replace blower resistor pack, located behind glovebox mounted on blower motor. Also check for burnt wires or contact pins on connector.

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Crazy stuff going on

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