Question about 1996 Buick Roadmaster
It is the control module u set for heat/ac in the center of the dash, all the electronics are in side this module that do the switching and maintain the temp u set
Posted on Jan 12, 2009
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Posted on Jan 02, 2017
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Sep 03, 2014 | 1996 Buick Roadmaster
Air Temperature Control Blend
all modern cars there is a tiny DC electric motor driven gear drive
that moves a plastic door that blends heated and cooled air from the
AC and the heater core, this is called (interestedly enough) the air
temperature control blend door actuator. The motor that moves this
door fails because the door starts sticking from warping, most common
complaint is no heat but it can be no AC as well. To replace these
parts (blend door and blend door actuator) you must remove the entire
dash from the car. Always have this problem confirmed by a dealer or
qualified repair shop as it is a very expensive repair.
Also try disconnecting the battery negative cable a few times for 5 minutes to see if the systems are just out of sync.
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