I recently a week ago had AC in my 5.7 JGC .and just as couple days ago I'm blowing hot air now. I did just added a lil more ac fridgerant. And Ive tried the usual things like check fuses. Check relays. My compressor clutch isn't engageing ( that spinny thing in the middle). I'm debating my options as of right now. Any help would he appreciated. Id rather not buy a new compressor but will if I need to.
Check to make sure the compressor wires are plugged in and in good shape.
I once had a mouse chew through one, took me forever to figure out what had happened. Finally found it, spliced it back together, good to go.