Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Doe the fan work when connected to direct power ?
Ok you are in the correct direction about the relay.Most common is the a/c condenser or clutch relay have you tried to swap this relays out with a known good relay ? Also if the a/c system is over or under charged it will cause this issue as well s a shorting out a/c compressor clutch .
Ok if you jump the relay does the compressor come on?
Ok thats telling you the relays good and it has to be the compressor itself if the compressor clutch does not come on when its jumped.