Stuck on defrost

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RON GRUEN
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I have a 97 chevy lumina that will blow air onto the floor and out the defrost, but not out of the dashboard. If I move the selector switch to vent (dashboard only) the air only blows on the floor.

I am a new member of this site. Any info would be greatly appreciated.

Can you please explain to me what could be wrong.
Jul 26, 2006 at 7:15 PM
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BSHERWOOD
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I was able to locate what I think is a vacuum line that was disconnected. It is on the inside of the front drivers side fender, under the hood, behind the battery. One end of the hose is connected to a T shaped connector, and the other is just hanging loose once I connected it the system started working.
Aug 14, 2006 at 11:12 AM
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STRAILER
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  • 53,854 POSTS
Hey Guys,

Here is a vacuum diagram and vacuum storage tank so you can get the problem fixed. Also a guide so you can follow and test the hoses. Also there is a rotary vacuum valve in the dash that goes, bad, can you hear a vacuum leak just behind the climate control panel?

https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position

Please let us know what happens so it will help others

Best, Ken
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Feb 2, 2017 at 2:41 AM
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