Can change fan speed and change heater selection knobs, but the air only goes to the defroster.
Jun 13, 2015 at 12:35 PM
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CARADIODOC
✓Experienced Mechanic
34,407 POSTS
Check for a broken or disconnected vacuum hose under the hood. Most systems are spring-loaded to default to the defrost position for safety when that hose is disconnected. Your feet might freeze, but the windshield will be clear.