2001 Chevrolet Silverado Does Air Only Come Out Windshield Vents Other Selected

2001 CHEVROLET SILVERADO
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why does the air only come out at the windshield vents but none of the other vents when selected?
Mar 29, 2013 at 11:33 PM
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CARADIODOC
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Chances are your system uses vacuum controls to run the mode motors, and vacuum has been lost. Look under the hood for a small hard plastic vacuum hose going through the firewall that's cracked or pulled apart. Most systems are spring-loaded to go to defrost mode for safety when vacuum is lost. Your feet might freeze but your windshield will be clear.
Mar 30, 2013 at 1:16 AM
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