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RE: Chevrolet Suburban AC Issue? Weird!

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RE: Chevrolet Suburban AC Issue? Weird! - 8/22/2006 5:56:46 PM   
Zach

 

Posts: 9
Joined: 8/15/2006
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I'll try that. Thanks!

(in reply to EscalonJon)
Post #: 11
RE: Chevrolet Suburban AC Issue? Weird! - 8/27/2006 10:57:06 AM   
Zach

 

Posts: 9
Joined: 8/15/2006
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I decided not to go with a quick-fix since it would be best to wire it in as it originally was.

I was reading about.com in my extensive research into this problem, and found a topic that said the following:

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http://experts.about.com/q/GMC-Repair-813/97-GMC-Suburban-AC.htm

Expert: Jim Gautreau
Date: 6/14/2006
Subject: 97 GMC Suburban AC


Question
The AC compressor on my 1997 GMC Suburban will not engage. It appears that there is no power to the compressor clutch. I have checked all of the fuses I can find and I have replaced the AC relay under the hood. It will not engage when I press the AC button or when I turn on the defroster. All of the fans inside work.

Answer
You either have a low charge which is preventing it from working, or the low pressure cycling switch is stuck. The switch is on the accumulator near the passenger side firewall. Try useing a paper clip to jump it and see if your A/C works. If it does then you need to replace that switch.

---

After reading this response to another person's identical problem, I decided to investigate the possibility that the low pressure cycling switch is stuck. I hooked my multimeter up to the cable that provides power to the AC clutch and there is no power running to it. Therefore, I think that the problem may lie with the low pressure cycling switch. Does anybody know anything about this? More specifically, what the switch looks like and how I can check it?

Thanks again everybody!!
Zach

(in reply to Zach)
Post #: 12
RE: Chevrolet Suburban AC Issue? Weird! - 8/27/2006 2:22:22 PM   
NCHEVYHEVN

 

Posts: 268
Joined: 7/23/2006
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It's what I said you should check in like my first post in this thread. All you need to do is jump the wires and see if the compressor engages.

(in reply to Zach)
Post #: 13
RE: Chevrolet Suburban AC Issue? Weird! - 8/27/2006 6:30:26 PM   
Zach

 

Posts: 9
Joined: 8/15/2006
Status: offline
Do you mean jump some wires between the battery and the clutch? Sorry, I'm not very savvy on AC systems (or electrical systems for that matter). Which wires should I jump, and where?

Thanks again buddy!

(in reply to NCHEVYHEVN)
Post #: 14
RE: Chevrolet Suburban AC Issue? Weird! - 8/28/2006 7:11:45 PM   
NCHEVYHEVN

 

Posts: 268
Joined: 7/23/2006
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Pull the connector off and jump those wires with the a/c on. If the compressor clutch engages then that switch is bad.

(in reply to Zach)
Post #: 15
RE: Chevrolet Suburban AC Issue? Weird! - 9/10/2006 2:10:59 AM   
Zach

 

Posts: 9
Joined: 8/15/2006
Status: offline
Which connector do you mean? Is it the one that goes into the accumulator? I'm sorry, I've been looking for quite some time at my engine and I can't determine which switch or connector you're referring to. Thank you very much! :)

(in reply to NCHEVYHEVN)
Post #: 16
RE: Chevrolet Suburban AC Issue? Weird! - 7/15/2007 6:15:09 AM   
aircrewman

 

Posts: 12
Joined: 7/13/2007
Status: offline
yes that's the one.

(in reply to Zach)
Post #: 17
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