BUICK AIR CONDITIONER NOT WORKING

I Put A Walmart Stereo In My Car And Right After My A/c Will Not Work Correctly. I Cannot Control It And It Will Not Display Anything, It...

A/c Does Not Blow Sufficient Cold Air, Refrigerant Is Full. The Compressor Is Working.

Once It Sits In Garage Overnight, It Cools? Did Not Used To Do This.

Hi! For The Past Few Days I've Noticed That After My Car Has Warmed Up And Is Blowing Warm Air, It Will All Of A Sudden Start Blowing Cold...