Transfer case delete 4wd 05 tahoe

CTUBS8732 · Apr 25, 2024

I just replaced my transfer case input shaft seal and output shaft seal, and I'm still leaking fluid.

I just want to delete the transfer case completely. How would I go about doing that? Would I just need a transmission extension housing?

I'm confused and pissed at the same time. I have a leak and a bad vibration around 45-55mph.

I don't want to be just throwing money at it cause money is not plentiful in my current situation.

Thanks in advance
.

strutaeng · Apr 25, 2024

You mean like a 2wd conversion?

Boy, it's actually more involved than one would think.

The 2wd and 4x4 transmissions are actually different on the output shaft. So you either have to tear down the transmission completely to change the output shaft or swap transmission to a 2wd. Your rear driveshaft would have to get lengthened or swapped from a 2wd truck.

Not sure on the front differential though. Just remove the front driveshaft along with transfer case? Would that be okay?

And probably some speed sensors manipulation otherwise you will get error codes.

I would either invest in time to diagnose it properly or take it to a shop to diagnose/repair. Drive line vibrations are challenging to find. Start with the typical wear-prone items such as tires and u joints.

89Suburban · Apr 25, 2024

CTUBS8732 said:
I just replaced my transfer case input shaft seal and output shaft seal, and I'm still leaking fluid.

I just want to delete the transfer case completely. How would I go about doing that? Would I just need a transmission extension housing?

I'm confused and pissed at the same time. I have a leak and a bad vibration around 45-55mph.

I don't want to be just throwing money at it cause money is not plentiful in my current situation.

Thanks in advance
.

It's leaking transfer case fluid? Or trans fluid?

89Suburban · Apr 25, 2024

strutaeng said:
You mean like a 2wd conversion?

Boy, it's actually more involved than one would think.

The 2wd and 4x4 transmissions are actually different on the output shaft. So you either have to tear down the transmission completely to change the output shaft or swap transmission to a 2wd. Your rear driveshaft would have to get lengthened or swapped from a 2wd truck.

Not sure on the front differential though. Just remove the front driveshaft along with transfer case? Would that be okay?

And probably some speed sensors manipulation otherwise you will get error codes.

I would either invest in time to diagnose it properly or take it to a shop to diagnose/repair. Drive line vibrations are challenging to find. Start with the typical wear-prone items such as tires and u joints.

Only sensor in the front drive line for the 4WD is the actuator in the diff. If it is a mechanical plunger type it can just be removed from the diff and hung up and secured inside the engine compartment. As long as it's still plugged in it should not throw up any codes. If it is a thermal actuator that may be a different story, or maybe not. Speed sensors are in the wheel bearings.

This does not speak for any sensors/actuators in the transfer case.

CTUBS8732 · Apr 25, 2024

strutaeng said:
You mean like a 2wd conversion?

Boy, it's actually more involved than one would think.

The 2wd and 4x4 transmissions are actually different on the output shaft. So you either have to tear down the transmission completely to change the output shaft or swap transmission to a 2wd. Your rear driveshaft would have to get lengthened or swapped from a 2wd truck.

Not sure on the front differential though. Just remove the front driveshaft along with transfer case? Would that be okay?

And probably some speed sensors manipulation otherwise you will get error codes.

I would either invest in time to diagnose it properly or take it to a shop to diagnose/repair. Drive line vibrations are challenging to find. Start with the typical wear-prone items such as tires and u joints.

I'm thinking u joints or a shot transfer case. I had a Crown vic with shot axle shafts and would hum but it would leak on the inner side of a which ever wheel it was leaking from. I only see trans fluid on the underside of truck. Really I have trans fluid blow by on the back. Literally on the back glass and lift gate.

CTUBS8732 · Apr 25, 2024

89Suburban said:
It's leaking transfer case fluid? Or trans fluid?

Upon researching and youtube videos, I came to the conclusion it was the transfer case input shaft seal. (When I first replaced the seals)
1A auto video shows that if you undo the fill plug and fluid comes gushing out that I have a bad input shaft seal that's allowing trans fluid to get into the transfer case and cause it to become pressurized and leak thru the t case adapter

Fless · Apr 26, 2024

Your transmission fluid and your 4x4 transfer case fluids are (or should be) different. The 4x4 AUTO transfer case calls for blue Auto Trak II fluid, so it's very different from red transmission fluid. Did you see a mix of those when you drained the transfer case?

CTUBS8732 · Apr 26, 2024

It was all one color, dark red kinda brown. Definitely mixed. You cannot put more than 2 quarts in the t case without it dripping out the fill hole

strutaeng · Apr 26, 2024

As far as the vibration, you can jack the rear end and run the truck with the wheels spinning on the air (chock the front wheels for safety). Start removing the tires, then driveshaft to see if you can pinpoint the source. If vibration is still there, then it could be T-case/transmission.

I once spun out and hit a curb on a patch of ice on my 99 Silverado. I didn't think much about it. Several weeks later I heard a squealing. I took it to my mechanic and he lifted the rear end and ran it, then quickly pointed out to my rear passenger side wheel wobbled and asked what happened...then I remembered. So he replaced the axle shaft/bearing/seal and sent me on my way...

rockola1971 · Apr 27, 2024

Front input shaft bearing died on Tcase, rear bushing gone on tranny output shaft....all could be the cause of your pain.

Transfer case delete 4wd 05 tahoe

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