I have an AC control switch from a 97-2002 Cavalier that was installed in the car prior to my getting it. The problem is there isn't any vacuum to operate the solenoids from ac to defroster. The vacuum control switch has 6 lines, orange-red-blue-green-pink-yellow and I'm trying to figure out which one connects to a vacuum source to operate the controls. GM dealerships are no help. Any help out there???
Thanks, Dennis