Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
The switch on the compressor is hi pressure cut off.The Low pressure cycling switch should be on top of the accumulator.
The Low pressure switch turns on the a/c clutch.
You can use a jumper wire to bypass the low pressure switch to make the compressor come on.Disconnect the low pressure switch and put the jumper wire from one pin to the other on the connector.The fatter looking a/c line on the compressor is the low side,the smaller is the high side.