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Old 10-27-2019, 04:31 PM   #1
kljfamily
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where does this hose go?

hello,

2003 suburban 2500 8.1 np 246 tcase

While reinstalling the t-case noticed this hose hanging down passed the transmission. I don't remember seeing it while taking the tcase out.

Its not the one that goes to the nipple on the t-case that one is on the other side and is shorter.

Any idea where this connects to or is this some type of loose drain hose?
pics to come
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Old 10-27-2019, 04:34 PM   #2
kljfamily
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Re: where does this hose go?

here is the photo
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Old 10-27-2019, 07:43 PM   #3
v30crewcab
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Re: where does this hose go?

probably transmission case vent
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Old 10-27-2019, 07:44 PM   #4
kljfamily
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Re: where does this hose go?

Does that need to attach to somewhere or is it just for venting
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Old 10-28-2019, 03:25 PM   #5
hatzie
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Re: where does this hose go?

Could be a transmission vent.
The fuel tank vent is sometimes routed to a filter up near the transmission to cut down on dust ingestion. IIRC there's a TSB on this.
That hose would be about the right size.
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Old 11-12-2019, 09:44 PM   #6
hugger6933
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Re: where does this hose go?

it is a vent that has a tee just down from the trans one end goes up to the top of the trans with a vent the other ,well you found the other end. It isn't specific to just the 3/4 all are like that
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