2006 chevy cobalt a/c lights not working, a/c not getting cold.?

[LikeTotally]

Hi, I got my car fixed a couple days ago, a new motor for my moon roof... 2 days later my a/c light doesn't turn on so my a/c isn't working. It blows the air, but it's the outside air. There are two buttons, one's a snowflake button that makes the air cool and the other is a button that uses only the inside air I guess... Both of these buttons have light indicators to show when they're turned on. These lights aren't working. I called the dealership to ask if it could be a fuse or maybe it's related to the work they did 2 days ago. They said no, it's just a coincidence. The car isn't under warranty it cost me $$$ for the moon roof fixes... Is there a site for a DIY car repair? or can I take it to an autozone or checkers to see if they can run a test? Do you guys happen to know what it could be? Maybe a fuse? Thanks so much for your help!