Identify My Hoes!

[00'BlueSteel]

Was swapping out the dipstick tube and seal today and found these 2 rubber lines with plugs in them, one plug seems to be broken and fluid is leaking out. I think this is my leak, not the dipstick tube, cause the tube is fine and the seal I took out looked good as well.

Who knows what the 2 hoses with caps circled in red go to and if they should be capped or connected to something?

 

[Tonyrodz]

Look like vents for something. Maybe emissions or diff?

 

[00'BlueSteel]

Look like vents for something. Maybe emissions or diff?

I agree they are vents, I think they are the transfer case and transmission vent. I found them laying on top of the bellhousing behind the transmission’s dip stick tube. Something must be overfilled if it is leaking out of the vent. I think that’s where my highway speed leak is coming from, transmission and transfer case reach higher pressure at 65/70mph and push fluid out the vent? Sounds wonky, seems like it would come out the overflow line that goes out the back not out the vent?

 

[00'BlueSteel]

Found this diagram, I am positive these are the 2 vent lines I found.
Now why is there fluid coming out of one of them?

 

[Tonyrodz]

Overfilled maybe? Is there some kind of filter inline somewhere? If so, maybe it's saturated? Maybe it's getting pressurized too much? I'm just throwing guesses out.

 

[00'BlueSteel]

Overfilled maybe? Is there some kind of filter inline somewhere? If so, maybe it's saturated? Maybe it's getting pressurized too much? I'm just throwing guesses out.

I appreciate the extra guesses, that’s all I am doing right now.

The shop that rebuilt it did overfill it, I thought I had got it back to the right level but it is still over by a little bit, I am taking out the extra now.

I did find where people say that these transmission will do this when spun above 5600rpms, which is right where my shift is set at, I need to go do a pull and see if it indeed shifts right at 5600 or goes a little over. Every time I have noticed the leak it is right after I either get on the highway, which I usually do a WOT down the on ramps or hard full throttle down shifts passing people on the highway. Seems like it is a combination of overfilled, higher shift point spinning the transmission faster then it likes, and the added heat and expansion of the fluid at highway speeds.

 

[swathdiver]

What's coming out, trans or diff fluid? Does your diff take trans fluid like the GMT900s? It's possible the seal between the two is leaking or weeping.

 

[bayareadude84]

Where are these hoes you talkin about ?? Do they owe you money ???

 

[2011SSVHOE]

Yea I clicked on this thread to see maybe some hoes, but I guess I got Hosed instead, frickin typos ! lol

 

[2011SSVHOE]

Where are these hoes you talkin about ?? Do they owe you money ???

Yea I clicked on this thread thinking maybe to see a couple of hoe's I think I got hosed instead. fricking typo's ! LOL

 

[00'BlueSteel]

What's coming out, trans or diff fluid? Does your diff take trans fluid like the GMT900s? It's possible the seal between the two is leaking or weeping.

It’s the transmission vent line for sure. It hasn’t spit fluid out again since I put the new dipstick tube seal in and removed some more of the fluid. I haven’t got on the highway and tried that yet but I did pull my enclosed motorcycle trailer 35miles on back roads this morning and it didn’t leak at all. It was originally over filled by the shop when they rebuilt it back in December. I drove it 300miles on the highway 2 days after picking it up without knowing it was overfilled, it blew fluid everywhere because it was 2 quarts over. I called the shop they apologized and said to just remove the extra fluid and it would be fine. I removed fluid but I only removed it down to where it was about 1 quart over full. I read on here and a couple other places that the 4l60e likes being overfilled a little and that GM spec’d it out low from the get go.

 

[HiHoeSilver]

It’s the transmission vent line for sure. It hasn’t spit fluid out again since I put the new dipstick tube seal in and removed some more of the fluid. I haven’t got on the highway and tried that yet but I did pull my enclosed motorcycle trailer 35miles on back roads this morning and it didn’t leak at all. It was originally over filled by the shop when they rebuilt it back in December. I drove it 300miles on the highway 2 days after picking it up without knowing it was overfilled, it blew fluid everywhere because it was 2 quarts over. I called the shop they apologized and said to just remove the extra fluid and it would be fine. I removed fluid but I only removed it down to where it was about 1 quart over full. I read on here and a couple other places that the 4l60e likes being overfilled a little and that GM spec’d it out low from the get go.

I've read that too. How full are you now?

 

[00'BlueSteel]

I've read that too. How full are you now?

It’s right at the the top edge of the full indicator on the dip stick. It was probably an 1/8-1/4” over when it was spitting fluid out.