2001 Chevrolet Silverado Does Air Blow On Thedefrost Vent Control

2001 CHEVROLET SILVERADO
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why does the air blow on thedefrost not on vent when control is on vent
Oct 21, 2012 at 11:03 AM
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CARADIODOC
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Suspect a leak in the vacuum hose that runs the heater control mode motors. The system is spring-loaded to go to defrost mode when there's a loss of vacuum. Your feet might freeze but the windshield will be clear.
Oct 21, 2012 at 12:29 PM
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