Question about 2003 Chevrolet Cavalier

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HVAC duct No matter where I set the HVAC airflow dial, the air does not come out of the defroster vent onto the windshield. It only comes out of the upper dashboard vents. How do I repair this?

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  • Anonymous Oct 29, 2008

    I am looking for a solution also, I have checked some fuses because it should be an electric motor that transitions the valving, but nothing yet.

  • Anonymous Mar 17, 2014

    no cool air comes out of rear vents

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This is caused by a loose of vacuum to the mode control switch, the vacuum line runs through the firewall on the passenger side near the kick pad trim.

Posted on Nov 05, 2008

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