HVAC Calibration, 2000 Buick Regal

[tgilly22]

I have been having problems with my HVAC in my regal. I read previous posts where the advisor suggested putting the unit on AUTO, then disconnecting the negative battery lead and recalibrating the system. I did that and it worked wonderfuly, for a few days at a time. I have to do this 2-3 times per week. What can I do to resolve this?...Thank you

Cold and frustrated!

[BNaylor]

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.