1995 BUICK PARK AVENUE
64,000 MILES
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The defrost will not shut off. Is it a vacuum leak? already replaced the display...no change. Thanks, betsy
Oct 19, 2012 at 8:26 PM
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HMAC300
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it could be a vacuum leak either from engine or to one of the actuators in heater box. generic pic enclosed. seeif the actuators are getting vacuum first
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Oct 19, 2012 at 8:34 PM