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Old 01-28-2010, 05:55 AM   #2
BNaylor
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Re: HVAC Calibration, 2000 Buick Regal

Take it to the GM dealership and see if they can reprogram the climate control unit HVAC controller. But it sounds like the climate control head unit may be flaky.

On the above procedure make sure power to the ACC is in OFF and not in AUTO before turning ignition to OFF and disconnecting the battery negative cable.



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