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SUVs GMC Jimmy GMC Jimmy Climate Control Problems
82 messages, Last post on Oct 11, 2009 at 6:56 AM
You are in the GMC Jimmy Forum. Your Hosts are steve_ & tidester
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Replying to: tsg3313 (Mar 31, 2007 5:17 am) Then, just in front of the passengers side firewall is a large aluminum cylinder with freon lines going to it. There will be a thing sticking out of the side of it with a connector plugged to it. This is the pressure switch. Disconnect the harness and jumper the contacts with a paper clip or such. This will tell the compressor that there is pressure in the system and keep the compressor clutch engaged. If that compressor starts really rattling or banging, pull the jumper out and find a good A/C shop. It could still be a low freon condition, but more likely a shot compressor.
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Replying to: jlflemmons (Mar 31, 2007 6:10 pm)
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Replying to: repairdog (Apr 01, 2007 5:49 am) Great. My '99 has 78K on it. 
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Replying to: jlflemmons (Apr 02, 2007 7:10 pm)
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Replying to: repairdog (Apr 03, 2007 2:29 am) Does have an odd little rattle coming from somewhere at certain engine speeds, but not a/c related. Maybe cat?
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Replying to: jlflemmons (Apr 03, 2007 7:40 pm) |
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I had someone replace my freeze plugs recently and since then the air conditioner won't turn on. When I switch the dial to Air the fan comes on, but the compressor is not kicking on. I had the same guy look at it. The compressor kicks on when he jumped it directly (if that makes sense) and he says the relay is OK. The fuse also checks out. Any suggestions? Is there another set of fuses somewhere? Thanks for any help.
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Replying to: als95gmc (May 31, 2007 7:20 pm)
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Replying to: repairdog (Jun 01, 2007 1:43 am) |
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I have a 2000 Blazer Ls. For some reason the a/c blows cold and then warm, it is constantly switching back and forth. I told the service manager about it today while it was getting a window switch replaced. I asked if if just needed recharged. He said " No, it wouldnt blow cold at all if it was low on freon. It must be a switch going out. " What do yall think? If it is a switch, can it be replced by yourself or have to have a shop do it? And what and where is this switch? Thanks
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