Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
good evening and thanks for the question, i beleive your right but give me a moment to confirm that
Yes sir you are correct the switch is normally closed and a high pressure event causes it to open interrupting the ground circuit. If you are able to install a jumper and get ac, reason would say switch has failed, however to be on safe side i would like to see a set of gauges installed and verify what the high pressure is
I will add that i have not seen alot of these switches fail not saying they dont and not saying yours hasnt just please check the pressures to verify.