climate control

Replaced battery and the climate control goes haywire,, on blows through defrost.replaced it with a new one.still won't work correctly. I've done everything I can even got a new shipped over night from factory still blowing through defrost. Any suggestions

Has anyone experienced a Climate Control Module lose lighting or have the lowest fan setting stop working? The right side of mine is dark. Is there a more modern, digital version available? for reference : https://www.ebay.com/itm/225185439476

My truck developed symptoms of a ticking noise on the vent door under the passenger side dashboard and no fan control. The problem turned out to be a failed fan resistor control module. I purchased a GM Genuine Heating and Air Conditioning Blower Control Module (Part # 25-81773 ). The GM part...