AC has me stumped

[Doubeleive]

I had a problem with the fuses for the inside AC control unit on my 2003 Tahoe. Even though the fuses looked perfectly fine I believe the aluminum legs of the fuses were oxidized over time and the fuses were not working. Oxidized aluminum is non-conducting. When I replaced them the air conditioning controls worked fine. I believe there is one fuse on the driver side of the dash and another under the hood that affects that control unit. Something to look into anyway.

it was already found low refrigerant.