Question about GMC Sierra 1500

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I recharged ac no cold air

Hi, I recharged the ac, in my 95 gmc sierra pick up, the compressor went on one time, and that was it, it wont go on anymore.

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  • keepintouch3 Jun 19, 2009

    Hi Melee5, I sent my husband with the info you gave us, he tried it and it worked, so now we have cold air blowing in our truck!!!! Thank you so much!! We are both heart patients, we were really worried how we were going to go to dr.'s and markets. From 1-10, we rate you a 11!!!! You are Heaven Sent. God Bless You. Sincerely, Larry and Magda

  • Anonymous Mar 19, 2014

    i connect the freon and open valve but the system will no take it

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  • 48 Answers

There is an over pressure protection switch that could be at cause and there is an under pressure protection switch that might be at cause and there is also the on/off pressure switch located on the dryer canister that actually controls the temperature of your evaporator that might be just plain wore out. Last I remember NAPA wouldn't even stock these as they wear out within a month of use and just quit like your situation. My solution to that is to hot wire them on with a section of bare copper wire within the plug assembly - cu'mon GM you have to do better than that to stay slovent. Opps, too late.

So, what pressure(s) are you running and/or can you trace down the lack of electricty to your compressor's clutch? You've just started to trouble shoot this problem.

Posted on Jun 19, 2009

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Posted on Jan 02, 2017

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  1. Turn the truck on and turn AC on HIGH
  2. Locate the low side AC line (will have a valve and cap similar to the cap on a tire)
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