A/C Blows Hot

I have been looking for hours about what could be causing this. My 98 Bravada has been perfect A/C blows cold untill yesturday when I was driving and my stereo was too loud I guess and I ended up blowing a fuse that shut off my gauges some how. I replaced the fuse for that and the gauges worked. But the A/C doesn't work now. I have checked all the fuses took apart the controlls and they all tested out. I can not control the temperature of the air. Even if the A/C light is on the system blows hot hot air. I have heard of a vacuum line problem but this occurred because of something electrical. I am totally lost and miss my automatic climate control. If this has happened to anybody please let me know the remedy.