Question about 1992 Chevrolet C/K 2500

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Flashing AC and no cool air

My AC in my 1992 chevy pu just stop producing cool air and the letters that indicate that the air conditioning system is on just flashes. what is this telling me.

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  • 9 Answers

Hi my name is david the problem most likely is that you need some more refrigerant that makes the air cold thank you for letting me help

Posted on Apr 12, 2009

6 Suggested Answers

SOURCE: 2005 GMC Yukon air conditioning

Hey folks, my understanding is there is a 'technical bulletin' for erractic AC vent behavior for 2004-2005 Yukons. This is not necessarily a warranty repair, so ask your dealer for further details.

Posted on Sep 17, 2008

  • 335 Answers

SOURCE: AC not cool

Check the a/c lines entering the firewall. Large hose should be cold and small line warm-hot.If o/k, may have vacumm leak to underdash control. If vacumm is lost the system will revert to heat and defrost. Could also be the air blend door is stuck. Maybe something dropped down defrost vent on dash. If this helps Please rate

Posted on May 01, 2009

  • 121 Answers

SOURCE: air conditioning problems with 2000 impala

What stuff did you put in it? You might need a freon recharge.

Posted on May 07, 2009

emissionwiz
  • 70365 Answers

SOURCE: 1992 Lexus SC300 Air Condtioner blowing cool/warm

the system is low on charge, it has a leak, repair the leak and recharge

Posted on Jun 17, 2009

greg_margo
  • 1959 Answers

SOURCE: Vacuum leak to AC controls 2000 Chevy Lumina

Check the vacuum lines, starting at the firewall in front of the passenger side and trace backward.

Posted on Jun 19, 2009

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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sounds like your radiator is overheating and the a/c isn't getting enough cool air for the condensor.

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1991 chevy g20. 5.7l v8. air conditioning does not work. the blower and switches seem to work fine but it does not cool and only blows out of defrosters.


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You need to follow the ac lines from the ac compressor to the ac condensor to the fire wall behind the engine where it goes to the heater box.There are two connections,both at differant locations,a low side that has a screw on red or blue cap with the letter L on it and a high side with a cap that has the letter H on it.The refridgerant goes into the low side.Hope this helps.

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