99 Tahoe t-case help

Jeremyhuskers · Aug 10, 2017

I have a 1999 Tahoe LT. My transfer case is leaking from the front drive shaft the one that goes to my front differential. I'm having a hard time finding this seal online. Can anyone help? It's a 4 speed with the push bottom inside.

east302 · Aug 11, 2017

It's the front output shaft seal. Do you have the "Auto" option on the 4x4?

The push button transfer case without Auto is a NP243, with Auto is NP246. Check the data plate on the back of the case, it will have the model number at the top (I think it reads 243GM or 246GM). Your photo looks like a 246.

The GM part number is 12474947 (NP246) or 12384477 (NP243). I'd call a dealer to confirm, though.

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Jeremyhuskers · Aug 11, 2017

east302 said:
It's the front output shaft seal. Do you have the "Auto" option on the 4x4?

The push button transfer case without Auto is a NP243, with Auto is NP246. Check the data plate on the back of the case, it will have the model number at the top (I think it reads 243GM or 246GM). Your photo looks like a 246.

The GM part number is 12474947 (NP246) or 12384477 (NP243). I'd call a dealer to confirm, though.

Sent from my iPhone using Tapatalk

Yes this has the auto option and it's the front seal for the front drive shaft. I'll get under and take a look at the model number

99 Tahoe t-case help

Jeremyhuskers

TYF Newbie

east302

Full Access Member

Jeremyhuskers

TYF Newbie

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