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Chevy Silverado and GMC Sierra Climate Control

369 messages,  Last post on Apr 29, 2013 at 10:31 AM

You are in the Chevrolet Silverado & GMC Sierra Forum.

What is this discussion about? Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Heating / Cooling, Truck

Messages Page 14 of 37

#131 of 369 2000 silverado compressor problem!!! A/C by jaced

May 20, 2008 (8:53 am)

Im experiencing a problem with my a/c compressor. It's never engaging when I hit the button to turn it on. I stopped at a car shop yesterday and they told me it's charged with freon and that they think it is an electrical problem. Well since im an electrician not a mechanic I figured i might be able to trouble-shoot the problem. All fuses seemed to be ok by sight and checked good with my meter. The larger relay in the electrical box had continuity between two diagonal poles. Sorry for the length of the question, just trying to be informative. Thanks a lot, and I forgot to tell you it's a 2000 model chevrolet 1500 5.3 liter V8.

#132 of 369 Re: 2003 Silverado Blend Door Actuator [canam2] by snowbugca

May 20, 2008 (5:13 pm)

Replying to: canam2 (May 09, 2008 4:34 am)
You already got the diagnosis right. I just had mine changed. Cost about $560. (not at a dealer) the part is $210. I beleive it is the farthest left one. There is 3 or 4 of these motors on the HVAC. I don`t think the crack is the problem. Jim

#133 of 369 2003 silverado a/c by canam2

May 22, 2008 (6:11 pm)

I have dual climate control and it has been blowing heated air out of the drivers side for some time now. I removed the blend door actuator that controls the drivers side. It appears there is a plasitc shaft that goes from the actuator to the "HVAC Box". This shaft is sheared off flush with the actuator. What is my next course of action? Can the broken piece be removed without tearing the dash apart? Im afraid there must be something blocking the blend door, that made is shear off in the first place. What kind of job is is to get at something like that?
Thank you.

#134 of 369 Re: 2000 silverado compressor problem!!! A/C [jaced] by cfi62

May 23, 2008 (3:36 pm)

Replying to: jaced (May 20, 2008 8:53 am)
I too have a similar problem. this is on a 2004 Sierra with dual climate controls. the blow is the only thing that responds to any controls. the ac button will not turn green when pushed. the dampers do not modulate when moved to another position and nothing but hot air is coming out the vents. also, the recirculate button light will not come on to indicate which mode it is in. any help would be thankful. I checked the fuses (ones that seemed involved with the ac and control) visually and all appeared ok. thanks in advance. chuck

#135 of 369 Re: 2003 silverado a/c [canam2] by maynor007

May 23, 2008 (5:00 pm)

Replying to: canam2 (May 22, 2008 6:11 pm)
I have the same problem with my 2007 Avalanche LTZ. The drivers side AC works fine. The passenger side will start to blow heat after running for awhile. When the truck is shut off, the restarted, it will blow correctly. Then it will go back to blowing heated air on the passengers side, while the drivers side is blowing cold air. Dealer wants to take apart the dash to find the problem.

#136 of 369 03 Sierra 1500 Crew A/C Problems (HELP PLEASE) by doompeakmudder

Jun 02, 2008 (8:10 am)

Hey all,
Hope someone out there can help. Basically the Trucks AC was working fine and then the other day only blowing warm air. Ran the truck on a 20 minute trip with the AC on as I've heard it can take a bit to come on and still nothing but warm air. Check the refrigerant and it was fine. When turning on the AC you can hear/feel the power transfer as the motor send power. Took a look at the compressor and it was not turning when the AC was switched on. Got my hand down there and was able to move it so I know it's not seized up. Checked fuses in the cabin and under the hood that were related to the AC and all were good. Anybody have any idea what could be causing this? I'd like to fix it myself as I enjoy that sort of thing also would like to avid dealer pricing where ever possible. Thanks in advance....

#137 of 369 Re: 03 Sierra 1500 Crew A/C Problems (HELP PLEASE) [doompeakmudder] by obyone

Jun 03, 2008 (8:24 pm)

Replying to: doompeakmudder (Jun 02, 2008 8:10 am)
There is only one reason for it blowing warm air and that's insufficient amount of R134a. You stated that you checked the refrigerant. Exactly how did you do this?

#138 of 369 Re: 03 Sierra 1500 Crew A/C Problems (HELP PLEASE) [obyone] by tracyh68

Jun 03, 2008 (9:20 pm)

Replying to: obyone (Jun 03, 2008 8:24 pm)
The dealer told me that the actuator needing replaced is causing the air to blow warm on the drivers side and cold on the passenger side.

#139 of 369 Re: to 137 & 138 A/C Problems by wstarnes

Jun 05, 2008 (5:19 pm)

Low refrigerate is never the root cause of a cooling problem, just a symptom of a another problem somewhere else in the system.Chevy P/U's are notorious for actuator blend door problems which can affect the ability to control the air or heat depending on where it got stuck or quit working..

#140 of 369 95 chevy air control switch by leggman131656

Jun 08, 2008 (2:26 pm)

my 95 pickup air control has 5 speeds they one by one went out til finally all have quit working, I have tested the blower motor and it works ..what is my problem and how do I fix it..do I need to replace the whole climate control board..someone commented about a diode..what is that and where do u find it.

Messages Page 14 of 37

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