Heat/Air Problem

[GMGuy84]

I'm having some problems with my 05 Silverado's heating and air conditioning. Two or three times over the summer while I had my air on it would turn into hot air, really hot. Almost like I had the heat on full blast instead of the air. When I turned the truck off and then turned it back on again it was back to normal. About a week ago I had to use my heat for the first time and it was only putting out cool air. I'm trying to narrow down what the problem is. I'd like to try and avoid taking it anywhere and fix it myself, but I also don't want to just start throwing parts and money at it. Thoughts?

 

Thanks Nic

[txab]

Probably one of the systems blend door actuators.

[GMGuy84]

That's all anyone's got?? I could really use some advise...

[MikeNH]

That's all anyone's got?? I could really use some advise...

 

It's all the advice you got because it is the likely culprit.

[GMGuy84]

Is this a pretty easy job or am I gonna be taking the whole dash apart?

 

 

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[MikeNH]

I've never done the repair but there are a few threads on here if you search. I think that with the dual zone one side is easier than the other. Does the passenger side of your truck do the same thing?

[GMGuy84]

Yea both sides do the same thing.

 

 

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[SouthCo]

My wifes 05 Yukon was doing the same thing. replaced the passenger side blend door actuator and it has been fine since. do a search on here and you will find what you need.

[txab]

http://www.tahoeyukonforum.com/forum/showthread.php?t=15787&highlight=Blend+Door+Actuator

 

 

http://www.gm-trucks.com/forums/topic/124808-temperature-valve-actuator-replacement/?do=findComment&comment=1112364

[Chris]

Mine went, both blend door actuators and the control head needed to be replaced

[GMGuy84]

Thanks guys! I need to go and narrow down which actuator it is.

 

 

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[Chris]

A Tech 2 can diagnose at the component level

[GMGuy84]

Do I tried my heat this morning and all of the vents blow cool air. Defrost, floor, everything. It seems like the passenger side isn't blowing quite as strong. Does this mean the passenger side actuator is bad?

 

I followed the links you guys provided and they were very helpful. I'm just trying to make sure I'm replacing the correct actuator.

 

 

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