Heater
1990 Buick LeSabre

Heater

(1990 Buick LeSabre)
hello my heater only blows out the bottom but when i put the ac on it will blow out the bottom vent's and the defrost what do i do? thanks
1 answer & 0 comments
Popular Answer
on November 07, 2010
Take a look underneath your dash for any disconnected or damaged vacuum hoses. You likely have a vacuum leak that is keeping the vacuum driven motors that turn the doors inside your dash for ventilation control from working.
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General Diagnosis
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on November 07, 2010
Take a look underneath your dash for any disconnected or damaged vacuum hoses. You likely have a vacuum leak that is keeping the vacuum driven motors that turn the doors inside your dash for ventilation control from working.
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