Same thing on mine and I fixed it last week. About may of next year I will turn it shut so I will have max AC. Then in Sept I will open her up again. I will do this forever or until one of these new parts falls in my lap. LOL
OLD 05 KC 2wd Galaxy Black
New 08 Pro4X CC LWB Galaxy Black
Bedliner step bars
DIY Back Window Screen
Extang Tuff Toneau Cover
JB Bright Arse Back UP Lights
R1 Concept Slotted Rotors with Hawk LTS Pads
Just wanted to say thanks for the post. Helped me fix the same issue.
Drove my truck to work this morning - heat was working fine. Drove home - no heat, brrrrr. Checked fuses, relays, and the front control panel connections (did some audio work a day before), everything seemed fine.
After doing some research, found this post that describes the valve. And sure enough after pulling the plastic shaft and moving the top gear back and forth a few times and reinserting the shaft things started to work again.
I'm just glad that valve was easy to access and didn't require pulling half the console apart or something like that.
My concern tho is that when I opened up the cover for this valve I had about a third or even half cup of coolant/refrigerant spill out. Is it normal for it to leak into the gear enclosure? Could it be contributing to the failure of this component?
Guys I have been meaning to take my truck to a dealership to get it looked at. I had planned on putting the little shaft part back in place before doing so. But I was driving down the road the other day and lost all my Transmission fluid so I took it into a dealership up the rd. It ended up being my coolant line.
I asked them to check out my heater and showed the service writer the shaft, and put it in the cup holder in the center console.
They diagnosed the problem as the heat pump hose assembly. From what I gather it is the little box that I took the shaft out of.
Question: Did they diagnose that as bad because I had the shaft out? I doubt the service writer actually showed the tech. I can change that out I am sure just do not want to do it if it is a bad diagnosis.
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