air blows out defrost only

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May 2, 2010 | 11:25 AM

rcrge

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Joined: May 2010

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air blows out defrost only

Hi new to the forum i have 1987 winnebegao with chevy chassis,no matter where i place control selector air only comes out from defrost vents

May 2, 2010 | 12:21 PM

MDTAHOE

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Joined: Nov 2008

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From: Bowie, MD

Defrost is the default. You need to look for a broken vac line. The line that comes from the engine through the fire wall is the one to be concerned with.

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