GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

No freakin ac??

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Old Aug 26, 2009 | 09:49 PM
  #11  
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If it's full of refrigerant and the compressor still isn't coming on, you may have a bad pressure switch
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Old Aug 27, 2009 | 07:12 AM
  #12  
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Originally Posted by thunder550
Damn you. I need to keep checking threads when I make comments like that.

Plus, I have a high-fiber diet
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Old Aug 28, 2009 | 10:56 AM
  #13  
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Originally Posted by AKlowriderZ71
When my a/c quit, I found that I had thrown off the a/c belt. Easy fix.
Why wud a guy in AK need AC? Free up the HP and leave the belt off!

Last edited by dhpro; Aug 28, 2009 at 11:01 AM.
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Old Aug 28, 2009 | 10:59 AM
  #14  
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Originally Posted by BlackLM7
I remember some people here resolving their A/C problems by disconnecting the negative on the battery for about a minute and connecting it up again. Worth a try I guess....
If ur AC was off for a long while this fix sometimes works, as thats usually caused by stuck accumulator doors. yours sounds more like pressure switch to me. I had my head unit replaced, but from what GM tells me, thats rarely the prob. R/
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Old Aug 28, 2009 | 02:45 PM
  #15  
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Originally Posted by dhpro
Why wud a guy in AK need AC? Free up the HP and leave the belt off!
It gets hot up here sometimes. Hard to deal with these 70 degree temps in the summer.
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Old Aug 29, 2009 | 12:15 AM
  #16  
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Could be a bad clutch coil. Unplug the AC compressor clutch coil connector. On the compressor side, connect 12v to one pin and then touch the other to ground. Your clutch should engage. If not you need a new coil.
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Old Aug 31, 2009 | 04:28 PM
  #17  
ino
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I have the same exact problem as you. Was working fine and it stopped will check that relay test you did and other test on here also.
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