Question about 1998 Buick LeSabre
There is a vent flap inside the venting system behind and up under the dash board. The vent flap can get stuck or the actuator that moves it can become faulty.
Posted on Sep 02, 2010
Renew the small vacumn pipes that come from teh inlet manifold to the operating flaps on the heater /AC unit ,start at manifold and follow them ,i think one has a split end so no vacumn and the operating flaps will not open or cl?ose correctly causing exactly the problem you describe
Posted on Sep 01, 2010
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Posted on Jan 02, 2017
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