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Chevrolet Avalanche Climate Control

14 messages,  Last post on Jun 26, 2012 at 12:35 PM

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What is this discussion about? Chevrolet Avalanche, Truck

Messages Page 2 of 2

#5 of 14 Re: Climate control blowing hot air on Pass. side/when AC is on [maynor007] by robyr

Sep 12, 2008 (6:55 pm)

Replying to: maynor007 (May 22, 2008 10:43 am)
I have a 2004 chev avalanche. Ichanged the battery and now the climate control blows hot air on the drivers and cold air on the passenger side. I have tried auto and manual no change. help.... robyr

#6 of 14 a/c only blows air from windshield defroster vents by monsterlee

May 24, 2010 (11:25 am)

I have a 2004 Chevy Avalanche, the problem is i can only get my a/c to blow cold air out the windshield defroster vents only, no air from front or floor. And if while the control switch/knob is in the front/face vent position, and my truck is running, then i turn off my engine then start engine again, then i can get airflow out my front vents, but only for 3 to 5 seconds, then all the airflow transfers to my windshield defroster vents and stays there... can you help me out Thanks, Jerry

#7 of 14 climate control by bigdogonthepo

Jul 12, 2010 (4:27 am)

I own three Chevy trucks and all three of them have had the same problem with hot air coming out of one side of the dash while cold is coming out of the other side. My 2006 Silverado does it while driving. At first I was able to turn the key off and then back on and it would reset it's self. Now you have to shut the engine completely off and re start with the key to get it to reset. I've asked the dealership and several other people about this problem. They all tell me it has to do with the vent actuators. Well one day I got to playing in the fuse box under the hood and pulled out a couple of the little silver relays that were marked for the a/c. I swapped them around and the next time it happened the air was reversed from what it was before. Now instead of the drivers side going to heat, it's the passenger side that goes to heat. Still re sets it's self when re starting the engine. My Avalanche does the exact same thing just not as often. The problem could be the relay but I think it has more to do with the signal from the on board computer causing the relay to react. I have noticed that all three vehicles have several grounding problems which could be the cause of a lot of the computers miss info to the different components.

#8 of 14 Re: climate control [bigdogonthepo] by kelz

Sep 20, 2010 (7:04 pm)

Replying to: bigdogonthepo (Jul 12, 2010 4:27 am)
have you found a resolution for this problem? My 2004 avalanche just started doing the same thing. cold air drivers side, hot air passenger side.

#9 of 14 air conditioner by stolls1992

Jul 07, 2011 (10:21 am)

I have a 04 Alvanche and the air only works on high and not on the lower speeds, is there a lower gears that can be replace and if so how are is it to fix

#10 of 14 Re: air conditioner [stolls1992] by voodooudu

Jul 23, 2011 (2:31 pm)

Replying to: stolls1992 (Jul 07, 2011 10:21 am)
Hey stolls,
           I just got a letter from GM regarding this very problem with my 04 Avy. The problem is described as a faulty connector which allows moisture over time to enter the blower resitor assembly inside the AC/Heater assembly that will cause the blower to stop working or only work on certain speeds - Scary part there is also a faint burning smell sometimes associated. Check to see if you got the recall notice as GM is offering to repair this for free.

#11 of 14 Ac/heater no heat by tabogajoe

Oct 29, 2011 (12:10 pm)

I have a 04 avalanche the AC works perfectly but will not switch to heat. When I put it to the heat mode all I get is AC. Other then the AC/heater control itself, any other suggestions of where the problem could be.

#12 of 14 03 avalanche dual climate control heat by sashjas3

Nov 29, 2011 (7:21 am)

My problem is the heat only works when digital setting is at 90 degrees. When the temperature is set any lower the air blows cold as if the a/c is on. Air blows out of all vents and settings correctly as selected. I changed the climate control module and still have the same problem. Anyone out there have an idea on how to fix this problem?

#13 of 14 2004 Chevy Ava. Heater fan problem by msanti

Dec 30, 2011 (2:02 pm)

Heater fan is working but only blows through defrost no matter where you have the dial set. Anyone know how to fix?

#14 of 14 a/c by ladywolf8076

Jun 26, 2012 (12:35 pm)

my problem is this: I have 2004 Avalanche and this just started happening about 6 months ago maybe...it happens off and on but my a/c starts blowing hot air. Sometimes if I stop my truck like at a red light and then take off it will start blowing cold again but if it starts blowing hot, it normally doesn't go back cold till I either come to a stop or turn it off. Now just stopping it won't work anymore, still blows hot air.....it doesn't happen all the time but of course with our weather in the 100's now..it is wanting to blow hot a lot more. Any suggestions???

Messages Page 2 of 2

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