2033 impala 3.4 l a/c fine one day, no work next

checked the fuses, they all seem fine, on each side in car and upper and lower in engine compartment, checked all fuses that made sense, other thoughts on what might have caused this sudden, complete failure?

Bad switch, relay or faulty connections.

Total loss of refridgerant will do it. Big leak. Something from the road punctured the condensor.