Question about 2000 Chevrolet Malibu

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Air conditioner My air conditioning stopped working, relay & fuse are good, can use jumper wire at the relay ground and it will work, has correct amount of freon, do no know how to check control panel that you turn it on with.

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  • sherman north Apr 12, 2014

    I cannot find a low pressure switch for this model.

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  • 73 Answers

If you are able to make it satrt by grounding the relay then you know for shure that the ac system works fine .

But you have a problem on the driving side of the ac system .

I would look for an open circuit on your pcm module that drives the relay. ( the wire between your pcm and a/c relay is open .)

Try to locate that wire and see if you have overload of resistance, if yes change wire and everything is good. if not than you could have a faulty pcm output.(in that case you would need a new pcm.

hope this will help you!!

Posted on Jun 26, 2014

  • sherman north
    sherman north Jun 26, 2014

    Thanks for your answer, do u think it cold be the body control module possibly, I am thinking the wire from pcm should be a ground wire, going back to the relay. Is it possible that there is a bad ground connection in wiring harness possibly/ Thanks a lot for your answer, that might the problem

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Posted on Jan 02, 2017

Molson02536
  • 3854 Answers

SOURCE: 1995 z-28. air conditioner compressor won't kick

Your A/C pressure switch may have gone bad or the wire harness to it may have gone bad. The switch is along the low pressure line or on the A/C Accumulator ( looks like a silver canister) , Unplug the wire and you can jump it there and see if the clutch comes on, if it does try spreading the two tabs apart on the switch and clipping the wire back on. If it does not come back on you need to replace the switch, you can do it with out loosing to much R134A. Just got to be quick when you  remove the old one and placing the new one. The low side should have a reading of 30PSI to 50PSI and the high side should have 150PSI to 200PSI. Any other reading will give you poor A/C performance. Good luck and hope this helps.

Posted on Jun 23, 2009

SOURCE: have a 2007 Equinox. The

Unfortunately almost all vehicles made in the last 20 years
require a professional scan tool or pc scan tool software,
to look at & if possible actuate various system components

Can not really answer most HVAC questions, as you need
the knowledge,test equip etc, to just start somewhere &
you have to have the vehicle to see what does work

Any home or driveway remedy is gone forever
Unless you have motor vehicles as a hobby & eat & sleep
them, as most people do all the computer toys these days,
your pretty much done.

Unfortunately web sites like this one, have led people down
some road in a world of fuses,relays & other non sense, that
seldom fail or ever fix a thing.

Changing spark plugs & putting things in your gas tank is
not necessary & won't do anything either

I hate to tell you to go to a dealer, but if a local repair shop
has no interest in solving your problems ,you may have to

Posted on Aug 02, 2011

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