This is not Camaro related but maybe someone here can help me.I have a 93 Sonoma pickup and the A/c does not come on.I know the compressor and clutch are functional because I can jump across the terminals at the clutch and make the system work. Where am I losing the signal? Is there a relay somewhere? My Chilton's manual is very vague and only shows a "typical" schematic. This seems to be a problem with GM cars as I've had an El Camino and Monte SS that have done the same thing,but I'm not giving up on this one.This little truck is in great shape and I'd like to keep everything working. Thanks,guys.

Check for low freon.The compressor will not enguage if the system is low.That year S10 had a problem with bad evaporator cores leaking.Good Luck..