GM Truck Club Forum banner

Air Conditioning ?

3339 Views 12 Replies 6 Participants Last post by  corvetteman
1992 Suburban 2500, What is the easiest way to check the a/c compressor? When I turn it on I do not hear it engage. Thanks
1 - 1 of 13 Posts
If it cools well with the pressure switch shorted, then yes, it's a bad switch. They have a schrader valve in the fitting so you can just screw it off and screw a new one right back on it. It try to do it with it running because the pressure is lower and you lose less freon if the valve happens to leak a little bit. By the way, it's called a "pressure cycling switch," so you ask for the correct part if you need one.
Good Luck and God Bless
1 - 1 of 13 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.