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GMC Yukon Climate Control AC and Heat Questions

109 messages,  Last post on Oct 02, 2009 at 3:30 PM

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What is this discussion about? GMC Yukon XL, Chevrolet Suburban, Chevrolet Tahoe, Heating / Cooling, SUV

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#68 of 109 Bebensee by bbebensee Jun 30, 2008 (4:46 am)
I still have no answer as to why when I turn on my heater, the only vents that blow warm air are in the front. The back vents never blow warm??????? 2004 Yukon. I have disconnected the battery to default the computer no luck. The fuse is fine. The vents are not plugged the airflow is fine. Again this only happens with the rear climate control.   CAn some one please help before Winter sets in, last winter was cold!!   Thanks Replies to this message: arrie (Sep 29, 2008 8:15 am) B4UBuy (Jan 15, 2009 6:24 pm)
#70 of 109 A/C problems 2002 Yukon by wilbanks Jun 30, 2008 (5:34 pm)
I have climate control. The A.C works sometimes and blows cold air and the it will turn off and A.C button on the bottom of control panel will blink and A.C turns off. And come back on after a while then back off. What is this a problem with the control panel? Replies to this message: rsht (Jul 20, 2008 6:34 am) stearnspk (Jul 21, 2008 6:20 pm)
#71 of 109 Re: Reprogramming Air Conditioning [jlflemmons] by gwf Jul 19, 2008 (5:34 pm)
Replying to: jlflemmons (Aug 01, 2007 8:16 pm) Yep, can confirm the "pull-the-fuse" fix. I replaced the battery in my '04 XL Denali, and the front A/C would only blow full heat (I could control the fan, but the temp seemed to be max heat regardless of the panel setting). The rear controls seemed to work fine. I disconnected the battery a couple of times (key off) thinking that would reset, but apparently not. After reading this thread, I pulled the (front) A/C control fuse (I forget the label, but there's one for the front, and one for the rear), and drove the thing out to dinner. When we came out, I put the fuse back in, and was relieved that the system seemed to return to normal. Never had any prior issues with climate control. Thanks!!
#72 of 109 Re: A/C problems 2002 Yukon [wilbanks] by rsht Jul 20, 2008 (6:34 am)
Replying to: wilbanks (Jun 30, 2008 5:34 pm) Just my guess, have you checked to see if your AC system has the proper level of 134a? Replies to this message: stearnspk (Jul 21, 2008 6:20 pm)
#73 of 109 Re: A/C problems 2002 Yukon [rsht] by stearnspk Jul 21, 2008 (6:20 pm)
Replying to: rsht (Jul 20, 2008 6:34 am) We took it in and had the problem fixed. It ended up being a small hole made by the screw in the rear mud flap that caused a small leak. It was covered by the insulation so the dye was not visible where it was leaking. Thanks for your help.
#74 of 109 Re: 2007 Yukon Denali a/c problem [jlflemmons] by mefixit Jul 26, 2008 (7:13 am)
Replying to: jlflemmons (Oct 07, 2007 8:34 pm) Tried pulling the 10 amp fuse under the hood. Didn't seem to work. Is this the only fuse I need to pull?
#75 of 109 AC Quits when it rains..HELP by ceden35526 Aug 03, 2008 (2:20 am)
2002 Yukon XL / AC works great until there is a rain and you drive through a large puddle.   My 2002 Yukon XL AC works great until I go through a large puddle of water and then the air light on the panel blinks and the air goes off. After a while the light will go back on and the AC blows cold air again. Replies to this message: arrie (Aug 03, 2008 4:59 pm)
#76 of 109 Re: AC Quits when it rains..HELP [ceden35526] by arrie Aug 03, 2008 (4:59 pm)
Replying to: ceden35526 (Aug 03, 2008 2:20 am) I'm not sure what light you talk about? Do you mean the "snow flake" on the automatic climate control panel?   Anyhow, the problem with driving thru a large puddle of water could be that it momentarily disables the AC compressor. How it could do this is getting a lot of water on the compressor drive belt and pulleys.   The AC compressor is not driven by the fan belt. It has its own belt, which does not drive anything else but just the AC compressor. Location of the compressor is very low in front of the engine. It is actually as low as the crank shaft of the engine (this is how it is in my '04 Tahoe, which I believe is built the same for this part). Being this low in front of the engine makes it very likely to get a good wash if you drive thru a large (deep) puddle of water.   Your vehicle is 6 years old so the belt could be worn and rather easily slip when wet, unless you have replaced the compressor belt.   I have not replaced mine but when I changed my fan belt I looked at it and it appeared to be kind of a V-belt. V-belts start slipping very easily if they wear too narrow or the pulleys wear too wide. This causes the belt to "bottom out" on pulleys and the wedging provided high friction forces between walls of the pulleys and the belt are lost. If the belt / pulley condition is borderline a water flush can cause the compressor to stop for a moment until water dries out and this does not always cause belt squeal either. Then during normal dry conditions it works just without any problems.   Arrie
#77 of 109 Just wondering???? by culture Sep 14, 2008 (4:39 pm)
can I change my manual climate control to auto climate control in my 2007 GMC yukon

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