Leaking trans oil frI'm mystery tube?

Joined a month ago and have been really enjoying all the shared knowledge. Unfortunately, now I'm in need of some.

My 06 H3 Adventure, 140k, just started leaking what seems like transoil (red tinted). Any explanation what this tube is and why it's uncapped and leaking?

Thanks for the help

http://cloud.tapatalk.com/s/577ef1e963a90/0707162013.jpg
http://cloud.tapatalk.com/s/577ef1fc8d25a/0707162012.jpg


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Update: took it to the dealer since they had topped off the fluids recently and to me the transmission fluid looked over filled. It WAS over filled, by a LOT.

They are replacing and changing the filter. Hopefully that solves the problem. Sounds logical anyway; too much fluid making it overflow through vent line on a hot day.


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Apparently, that's a common occurrence. Seen several similar posts. Glad that your issue easily resolved itself.

keep a copy of your receipt in case you have a problem's later, That should never happen at a dealer.
How long ago did they add to much trans fluid?

Here is an unobstructed view.

It's a breather tube for transmission

What I don't understand is why is there a part of the breather system that is open ended, seems like water would still be able to flow up the hose (since the upper end is basically open to air flow so you wouldn't get an air pocket in the hose preventing water from entering) and get into the transmission if you went deep enough in water. Though I'd have to measure where the top of the transmission is where the breather tube connects to the transmission, since it might be over the 24" max fording depth GM specifies, which then I guess it'd be OK.

Either way, seems like it'd be better to maybe have a reservoir at the end of the bottom hose to allow for fluid drainage (since I'm assuming that's why that hose is there, in case the transmission is overfilled and heat expansion of the fluid it will bleed it off through the vent hose and drain out). Then you'd still have the overflow feature but it'd be sealed off to dirt/dust/water.

ARB sells breather tube replacement kits, u can ran it as hi as u want. I don't like plastic tubing that comes with it but u can attach up to 2 or 4 tubes to same breather.

Yes like sarge said it arb makes a kit...and the tubing they provide is alright...i just plug the arb hose to the existing one...since I melted the arb hose when I plugged it straight to the transmission.

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