I have been trying for days now to locate/ fix my A/C issue. I have a
99 Silverado that is not cooling as it should. When it cools, it is fine, it is great. Sometimes it works, sometimes it doesn't. Can't find a common denominator there. Anyway, I HAVE checked the refrigerant and pressure levels are good (45psi). Then I replaced the low pressure switch, no change. It appears that the compressor clutch isn't always engaging. When it spins, the truck is cold and all is well....until it stops. Does this sound like my high pressure switch may be going out or what? What could it be? Thanks in advance.- posted
17 years ago