Climate control issue, Need Help and quick.
 

My 2003 chevy ava has a few issues, the first one being that the climate control knobs dont seem to be working right, When i turn the knobs the number readings are erratic and inconsistent, ill turn the dial one way and the numbers will go the other, sometimes even dropping 10 degrees with one click to the right to heat. What is going on? How do i fix this? ive managed to get it to the highest heat setting for now but i really need this fixed. is it the module itself? cant that be fixed or does it need a replacement?