Question about 1989 Cadillac Sedan DeVille
Check to see if the air is coming out of the defrost vents up on top of your dash...by the windshield. If this is the case...you have a vacuum line that has either come loose under the dash....or....the vacuum controller located behind the AC/Heat controller is not functioning properly. ( Tip....Vacuum is what actuates the "doors" inside your AC/Heat plenum...directing airflow straight out front vents...up to the defrost....and down to the heat.....
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Posted on Jan 02, 2011
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Posted on Jan 02, 2017
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