How To Fix Transfer Case Output Shaft Leak Chevy Suburban Silverado Tahoe Yukon

This is a dual leak repair, no Racquetball needed. GM Slip Yoke and shaft seal. This video shows what worked to fix a Chevy transfer case leak. How to replace the transfer case output shaft seal and how to repair a leaking slip yoke plug. How to remove the drive shaft and the transfer case slip yoke on a Chevy Suburban, Tahoe, Yukon or Escalade. How to test a slip yoke for leakage. I waited until the repair had 3,000 miles before uploading this video to demonstrate that this is a durable fix of a slip yoke with a confirmed leak and has not leaked as of four years later. Thanks for watching.
To Get the Job Done:
Permatex 82180 Ultra Black: amzn.to/31KWDD4
A good shop vacuum. Something like this: amzn.to/3WZvB5I
A new shaft seal (you must confirm the correct seal for your vehicle)
This is the seal shown in the video for a 2012 Suburban 1500: amzn.to/33RfYoM
Metric Wrench Set: amzn.to/3ky5QXQ
Lucas Red and Tacky Grease in TUBE: amzn.to/32a1UrT
Lucas Red and Tacky Grease in TUBE: amzn.to/3GVA951
Moly Grease (for re-assembly): amzn.to/3isO9Hs
Omega Lift Heavy Duty 6-Ton Jack Stands Pair: amzn.to/2QqMr0z
PROTECTIVE GEAR:
-Face Masks: amzn.to/3D0zCiW
-Safety Goggles: amzn.to/3fZQfNq
-Safety Goggles (2-Pack): amzn.to/2PX2eR5
-Ear Protection Ear Muffs: amzn.to/3QOBMrq
-Ear Plugs: amzn.to/3CZJHfR
-Shop Gloves: amzn.to/3aGzAgV
-Nitrile Gloves (6-mil): amzn.to/3awjyWQ
Video Index:
0:06 Tools Used
1:05 The Leaks
1:28 Drive Shaft Removal
1:58 Output Shaft Seal Removal
2:24 Install New Shaft Seal
3:14 Slip Yoke Inspection
3:40 Slip Yoke Leak Test
4:14 Sealing the Slip Yoke
5:20 Grease the Slip Yoke
5:25 Install Drive Shaft
5:53 Check Transfer Case Fluid Level
Other Chevy Truck Repair Videos:
How To Find and Repair A/C Leak Chevy Suburban Tahoe Silverado GM Trucks:
kzbin.info/www/bejne/fWbciXuIiZmsidE
Replace Coolant Recovery Expansion Tank 2007 - 2020 GM Truck/SUV:
kzbin.info/www/bejne/f5m2dKiDgK6jkNE
Fix Stabilitrak Off Traction Off Dash Warning:
kzbin.info/www/bejne/qmG1aZp-oN59aNU
Engine Hot AC Turned Off Warning Solved:
kzbin.info/www/bejne/hWqpXqKceridgM0
Fix A Transfer Case Shaft Leak:
kzbin.info/www/bejne/jqPOn5J8dt97kMU
Fix Power Window Switches:
Driver master Switch: kzbin.info/www/bejne/fGrdomd5fpiroLc
Passenger & Rear Switch: kzbin.info/www/bejne/mmHJfXiGgJWMZsU
Fix broken Visor Mirror:
kzbin.info/www/bejne/ep2qZ4N6hbqlpLM
Rear Window Defrost Repair:
kzbin.info/www/bejne/jYiYmHqbiKyihcU
Remove and fix your Chevy Stereo:
kzbin.info/www/bejne/en_EpJyboN-Ffbc
Remove and Replace your Chevy Bumper:
kzbin.info/www/bejne/hHOcap1-ls6Xn8U
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[@brandonmoss3895]

If a guy is wearing those white New Balance, you listen.

[@torchtube5621]

You say less my good man I see you are a wise one 😁

[@RRo-up4pg]

Respect

[@stevenburkholder9437]

45-year mechanic, but you can still learn something new!

[@supertruckertroy]

Oh my goodness.. I have replaced 3 seals now amd have called numerous supposedly top of the line professional truck technicians and noone even mention that plug being suspect man thank you very much

[@ScubaMoto]

Troy Massey: I'm glad to hear it helped you out. Thanks for leaving the comment.

[@mark63366]

Great video. I thought it was strange that my driveshaft was leaking atf, your the first to mention how to fix it.

[@Lore-wv5mt]

I love how created you are with the yoke.

[@urielreyes1844]

Straight to the point and very clear, I’ll be doing my u joints and transfer case seal next week. Thanks for the video.

[@Parker_Garage]

That vacuum move was impressive, kudos to you

[@butchtheiw]

Exactly what I'm looking at with my 04.5 Silverado. Thanks very much for a short, sweet and fully informational video. I had a professionally rebuilt transfer case last summer and now I've got fluid leaking out of what looks like the seal area. I'm taking it back out to my diesel mechanic (the shop that installed the transfer case) to see what he thinks. But if the fix is this easy, I might do it myself. Although it's in the teens with ice on the ground out there. Thanks very much! Very helpful and not over my head.

[@ScubaMoto]

butchtheiw: Thanks for the kind words. I'm glad you liked the video. Odds are, your mechanic replaced the seal when doing the transfer case rebuild. If not, then the seal may be failed. If the slip yoke leaking, like in the video, it's unlikely your mechanic even knew it was leaking; most don't even know it's an issue. If you clean things up with a degreaser, as shown in the video, you should be able to see if the leak is caused by a failed seal, or by the slip yoke and then proceed accordingly. Thanks again for the comment and for sharing.

[@brianslocum2249]

Straight to the point no elaborate BS most excellent video thanks much!

[@ScubaMoto]

Glad I could help and thanks very much for the feedback.

[@Maverick09171]

This video was so great I had to use it twice 😆 I changed my seal about 3 months ago, and all was well. Fast forward to this week, and found dripping from the backside of the yoke plug. Should have done it the first time I had the driveshaft out! Thanks for the video!

[@ScubaMoto]

Hey Mike. I'm glad you finally got it fixed and I'm glad the video helped. Thanks for the comment.

[@yourselfdotcom]

You got some solid tips here. Love the vacuum on the slip yoke. The can on the seal was pretty slick too. I have one to do and will be adding these to my playbook. Thank you

[@ScubaMoto]

john smith: Thanks for the kind words. I'm glad the video was helpful! Enjoy the fix.

[@Rbenterprises4]

Oh my goodness, I thought I was going crazy! I plugged my new seal weep hole with rtv, thinking I installed it upside down, then I swore the yoke was leaking through to the ujoint! I will now easily be able to fix this leak on my 97 k1500! Thank you!

[@Living_Off_The_Road]

I saw a leak from the front u joint and was wondering how and watched videos over vieeos but man this was all I needed. Learned something new thank you! 98 chevy suburban c1500 180.000 miles & still alive.

[@ScubaMoto]

Kaya M. Glad you liked the video and congrats on keeping that Suburban going. Let's get it past 300K. Thanks for the comment.

[@Martin210670]

Very precise and concise, I slipped under the truck just yesterday just to see if there was anything else to repair while I replace the u-joints (as soon as weather permits) and noticed a leak at the joint. Did not know how to do it. Your clip is very helpful! Will replace it while I'm down there. Thanks!

[@ScubaMoto]

Martin Beaumont: I'm glad the video is a help. Enjoy the repair and thanks for the comment.

[@JacobHepworth]

You obviously think things through and know your way around mechanically. Thanks for the video, you earned a subscriber.

[@ScubaMoto]

Thanks for the sub and the kind words.

[@Cmikus01]

Short and too the point. Super video. I just replaced and the diff and t/c fluids, then found this problem. Leaking rear seal once I had enough fluid back in the T/C. Looks like it's back under the truck to do this repair. Great tips. Love the can and the vacuum.

[@ScubaMoto]

Glad to help. Thanks for the comment.

[@E36tyler]

Need to do this on my Duramax, hands down best video I’ve seen on this. Love the straightforward video

[@ScubaMoto]

I'm glad you liked it. Enjoy the repair and thanks for the feedback.

[@chefchef183]

Exactly what I was looking for, for my 08 Tahoe. Thank you

[@ScubaMoto]

Glad I could help. Thanks for the comment.

[@brettcasto3356]

Awesome video, you just saved me so much time and effort!

[@ScubaMoto]

Brett Casto: I'm glad it helped you out.

[@voidisyinyangvoidisyinyang885]

Smoothest Suscribe appeal in any repair vid thus far!

[@chicanoperez6377]

Bro this was an awesome video. Straight to the point and no bs, love it

[@ScubaMoto]

I'm glad you liked it. Thanks for the feedback

[@iamnotafraid]

I was quoted $1100 for my GMC Sierra 1500. Absolutely outrageous. I'll be doing this repair myself pretty soon, thank you for sharing.

[@tracerose5763]

same here with my tahoe

[@23elencantadorable]

How great the video that I could order the parts need it from here, and fix it! Thanks so much!

[@ScubaMoto]

Glad it helped! Thanks for the comment.

[@joesilver1850]

You saved my butt! I thought i was going to have to drop my drive shaft and replace the seal, I cleaned the area and it turns out it is only the plug on the yolk leaking. THANKS!

[@ScubaMoto]

Joe Silver: I'm glad the video helped. Congrats on fixing it yourself and thanks for sharing.

[@JoseGomez-wm3nk]

My truck was leaking from the same spot couldn’t figure it out till I saw this video big help thanks

[@ScubaMoto]

Jose Gomez: I'm glad it helped. Thanks for the comment.

[@Lightning7474.]

This video helped me out so much. Good details, to the point & didn't get off the subject! Thanks, much respect.

[@ScubaMoto]

lightning 7474: Thanks for the compliment. I'm glad the video helped you get the job done right. Thanks for sharing and taking the time to comment.

[@alfredamos5474]

Great tips! Thanks for sharing!

[@toohaziee.9060]

I just found this issue on my avalanche. Now I'm going to replace it also. Thanks for this video

[@ScubaMoto]

Roy Escobedo: I'm glad the video helped. They often leak through the slip yolk as shown in the video. If so, they will continue to leak even after replacing the output seal. The vacuum fix solves the slip yolk leak very well. Thanks for watching and for sharing.

[@toohaziee.9060]

Is the seal called tail housing seal or just shaft seal?

[@ScubaMoto]

Roy Escobedo: The seal I ordered was described as "ACDELCO Transfer Case Output Shaft Seal" with a part number specific to my vehicle.

[@fernandoescareno2697]

I’m doing this to my 07 Tahoe thank you so much 🙏

[@ScubaMoto]

@Torres21_12_ 41: You're welcome. I'm glad the video was helpful. Thanks for the comment and for sharing.

[@manukeairvine]

Great job, thank you so much

[@ryangleason3559]

Thank you for saving me an expensive trip to the mechanic 🙏

[@ScubaMoto]

You're welcome and congrats on making a good repair.

[@BenSinz45s]

Good work. Thanks for the vacuum idea.

[@ScubaMoto]

I'm glad it helped. Thanks for the comment.

[@orlanmedina3693]

Awesome yoke repair

[@ScubaMoto]

Thanks 👍

[@lucasmuniz4555]

I've got an 06 suburban that just started doing this today and plan on repairing it in the next day or so. Thank you so much for this video!!

[@ScubaMoto]

No problem I'm glad to help👍. Enjoy the repair.

[@lucasmuniz4555]

@@ScubaMoto Got it done in about an hour yesterday. Thanks again!!

[@ScubaMoto]

Congratulations on a job well done.

[@nickfarmer88]

Man I love it when the videos are short and sweet, without the guy going into rants about his dog and what he and wife had for dinner and stuff. Nice! 👍🏾👍🏾

[@ScubaMoto]

Glad you like them! Thanks for the comment.

[@Joe-nc4nf]

Good stuff brother. Thank you. You explain things well.

[@ScubaMoto]

Glad to help. Thanks for the feedback.

[@kindig88]

Very good idea with the vacuum

[@ScubaMoto]

cody kindig: Thanks for the compliment. FWIW this fix is still going strong and cannot contaminate the transfer case (with pieces of racquetballs or any other contaminants). Thanks for watching and for sharing.

[@chucknSC]

very smart tip with the vacuum !!!

[@ScubaMoto]

Chuck Neil: Thanks, I'm glad to help. Thanks for the comment and for sharing.

[@smartin1601]

Thank you sir; to the point and exactly what I needed.

[@ScubaMoto]

You're welcome! I'm glad it helped. Thanks for the comment.

[@LuisElebario]

Great video, short and to the point!!

[@ScubaMoto]

Glad it was helpful! Thanks for the comment.

[@MrRoy-rb1je]

Absolutely outstanding!!

[@ScubaMoto]

Glad you liked it! Thanks for the comment.

[@joeroberts1146]

Very well explained, thank you

[@ScubaMoto]

Glad it was helpful. Thanks for the feedback.

[@travismaniagigglebush247]

King Kong of video s a true bad ass right there

[@mrt9781]

Thanks for the video , I’m surprised the slip yoke manufacturer doesn’t install a better plug system. Seems a lot of people have this same problem.

[@ScubaMoto]

Mr T:Totally agree. Thanks for the comment and for sharing.

[@2003pblakey]

Brilliant man! I'll be doing this in my gmc tomorrow

[@ScubaMoto]

Paul Blakey: I'm glad the video helped. Enjoy the repair. Thanks for the comment and for sharing.

[@2003pblakey]

Got it done pretty quick. Thanks again!

[@wildcountrykat]

Thank-You For Making This Video !! 😊💖

[@ScubaMoto]

I'm glad it helped. Thanks for the comment.

[@briankoncyk3379]

Just found this and subscribed! Awesome job on the video and helpful tips!

[@ScubaMoto]

Brian Koncyk: I'm glad it helped and thanks for the sub!

[@briankoncyk3379]

@@ScubaMoto thank you!

[@BrettHoustonTube]

Great clip and creative tips! Thanks

[@ScubaMoto]

Glad you liked it! Thanks for the comment.

[@murphy6767]

Awesome tips brother.. Thanks

[@ScubaMoto]

Glad it helped.

[@connor247]

Great video. Very helpful.

[@ScubaMoto]

Glad it was helpful! Thanks for the comment.

[@louisespinoza9968]

GREAT VIDEO!! Thanks 🙏

[@ScubaMoto]

Louis Espinoza: You're welcome. I'm glad the video was helpful. Thanks for the comment and for sharing.

[@cwatson42785]

Wow you earned my sub for not only the can trick but the vac trick! Genius!! This was a huge help and I'll be going mine this weekend! Liked and subbed!

[@ScubaMoto]

Between the new seal and the vacuum, you'll get it. I'm glad you liked the video and thanks for the sub!

[@cwatson42785]

@ScubaMoto I had forgotten to like and sub lol 🤦🏻‍♂️... Just did it! Look forward to future videos! Yeah great tips! I just had to do my U joints and I noticed there was a drip coming off that seal. I'll get er done 💪🏼.... Thanks again buddy

[@reptile_official3420]

Thanks for the help really needed it

[@ScubaMoto]

You're welcome. I'm glad it helped. Thanks for the comment.

[@WendzDarKnight08]

Noticed my rear transfer case was leaking. Definitely going to do this to my 07 Tahoe. The seal is only $18 at autozone. Thanks for the video and gonna have to sacrifice a can of beans for this. Haha

[@ScubaMoto]

ZombieStain65: No problem, I'm glad you liked the video. Good luck on the 07 Tahoe. Those beans never taste better than after fixing a leak. And if the seal doesn't fix it, the vacuum trick will. Thanks for the comment and for sharing.

[@jayperez2526]

@zombie did you have any symptoms?

[@TheUndertoe]

I actually have a ball joint press tool kit and the sleeve fit right over the seal I was able to hammer it in really easily

[@rossfricke2010]

this might be my problem! thanks!

[@jdubya54]

excellent video!! thank you

[@ScubaMoto]

I'm glad it helped! Thanks for the comment and for sharing.

[@seanfried5583]

Great video, thanks for posting. I just started looking into this problem. I didn't realize this was such a straight forward fix. I am much relieved.

[@frankoneyjr.4515]

Great video !

[@ScubaMoto]

Thanks. Glad you liked it

[@voidisyinyangvoidisyinyang885]

nice vacuum trick!!

[@ScubaMoto]

Thanks!

[@xxtriplethreat3372]

This was a really good video 👌

[@ScubaMoto]

Glad you liked it. Thanks for the comment.

[@stanleybrooks3552]

Very helpful thank you

[@ScubaMoto]

Glad it was helpful. Thanks for the comment.

[@isaacgonzalez-oh5hv]

Sweeeet! Thank you bro!!! Saludos from Tijuana Mexico

[@ScubaMoto]

No problem 👍 Thanks for the comment.

[@compamarcosdetector6738]

Thanks... Very helpful.... nice video

[@ScubaMoto]

Ontiveros Detectors: I'm glad the video was helpful. Thanks for the comment and for sharing.

[@danyrealpe289]

Awesome job. Thanks

[@ScubaMoto]

Glad you liked it. Thanks for the comment.

[@jimbo1326]

I'm changing the seal on my 99 Silverado 1500 this weekend. FANTASTIC TIPS!! I'm definitely using an empty can and using that vacuum trick. Thanks man. You just got a new subscriber!!

[@ScubaMoto]

Jim Bo: I'm glad the video helped you out and thanks for the sub!

[@joshdelbridge2550]

Very helpful

[@ScubaMoto]

Josh Delbridge: I'm glad the video was helpful. Thanks for the comment and for sharing.

[@tofertallman2512]

Thanks!

[@mrbean_sin5554]

Gracias por compartir esa informacion Finalmente encontre el problema de mi troka 👍👍👍👍👍👍

[@ScubaMoto]

mrbean_sin 555: De nada. Me alegro de que el video haya ayudado. Felicitaciones por reparar su troka. Gracias por el comentario y por compartir. 👍

[@jayperez2526]

Que sintomas tenia su troka?

[@davidblizzy9725]

I am having that same problem replaced the shaft seal and U-joints and I had a slip yoke that had a vent hole which leak trans through the vent hole don’t know if there is supposed to be a another seal Inside the the output.

[@themanofthehour101]

Thanks G

[@BDJ4mTex]

I found that if you have a 2 inch pvc coupling it will also fit when its time to punch it in. Hopefully it helps but the can method you used is also great.

[@ScubaMoto]

The PVC couplers are stronger but I figured most people already have the cans on hand. Thanks for sharing.

[@jesserasso1042]

Very nice video very helpful

[@ScubaMoto]

Glad it was helpful! Thanks for the comment.

[@jesserasso1042]

@@ScubaMoto no problem I did exactly what you did in to your video thanks again

[@jking3892]

Excellent video,,, excellent

[@ScubaMoto]

Thanks, glad you liked it!

[@travisbrownae]

This is a premier example of an automotive how-to video. Thank you so much for posting! Where did you use the Red and Tacky grease? It looks like you used something different inside the slip yoke... Would you mind sharing?

[@ScubaMoto]

Thanks for the feedback. I'm glad it was helpful. I used a heavy bearing grease that I already had on hand. The Red and Tacky is also good for the splines inside the slip-yoke. Moly for the seal side.

[@Martin210670]

Thx again for the quality clip and tips. Finally did that today as I had to replace both u-joints. Went to my local auto parts store to buy a new seal, only had SKF brand seals. Bought it anyway as I was too lazy to drive a few more miles to the closest GM dealer. Used the can tip to sit the SKF seal in. Never went in and I destroyed the can in the process lol. I simply put original one back in which seems fine anyway despite a very tiny leak. Wasn't leaking after a very short and slow drive after the repair. Dr.shaft was shaking like hell from a shot t-case u-joint. Now that this is fixed, I hope the leak wont come back. Did use the Ultra Blk tip on yoke though. It should help, too. Should have go to the dealership to buy oem seal. When you compare oem seal to skf side by side, the skf does look very cheap. The outer ring is narrower and thinner and inside design is different, too. It was the same size, right part, should have sit properly but didn't. I'm gonna return it. Morale of this story? Use OEM seal.

[@jamesgoforth1606]

Same with me, I first looked at an SKF seal, and compared it with the old one I brought with me, I didn't like the way they compared, got a OEM instead, although more money

[@gormanthomas8135]

Great video! Just what I needed. Thank you! After I noticed the signs of leaking, I changed transfer case fluid. Surprisingly, the fluid level was still at fill plug. Considering a weep hole is built into the seal, is it possible some leakage is expected? Thanks again!

[@ScubaMoto]

I'm glad you liked the video and that it helped. The shaft seal does not have a weep hole. The weep hole is in the rubber splash guard that extends from the actual shaft seal. The hole allows mud and water to to drain out so it doesn't accumulate on the shaft near the seal but mud does often find its way in there. Mud is the most common cause of seal failure since it's just liquid sand paper. If you can rinse inside the splash guard, the weep hole will help you expel debris and water during the rinse to reduce seal exposure to abrasives. I hope that helps and thanks for the comment.

[@gormanthomas8135]

@@ScubaMoto Excellent insights! Thanks so much. Makes perfect sense.

[@digitalwayanenetwork1056]

Awesome 👏

[@ScubaMoto]

Glad it helped. Thanks for the comment.

[@matthewculver9667]

What kind of grease did you use

[@cazadoresnorteamericanos]

Thanks for the vid. Did you use any particular grease?

[@ScubaMoto]

Cazadores Norte American is - North American Hunters: For inside the slip-yoke I used a heavy multipurpose on the splines. For outside the slip-yoke a light coat of moly.

[@cazadoresnorteamericanos]

@@ScubaMoto thanks

[@donaldt7764]

Just had same problem after heating yoke to remove old joint. Sure enough when I sprayed brake cleaner down the shaft it started dripping.

[@danknitz9679]

Awesome video! I didnt install the seal with the weep hole on the bottom. Do you think that i can remove the seal without damaging it to reuse it? Also Is it possible to put the slip yoke on the output shaft without aligning it up correctly or will it only go in one way? Thanks again!

[@ScubaMoto]

You're welcome. I'm glad it helped. You could probably carefully wedge behind it to pry it out intact but I wonder how well the Permatex Ultra Black would work to just plug the weep hole that you accidentally installed on top and then you could punch a new drain hole on the bottom while the slip-yoke is out. It might save you the risk of damaging it during removal. At least the seals are cheap if you do decide to R and R it and it gets damaged. The shaft in the video only goes one way. It had a wide spline that fits the channel in the slip yoke that you can see at 3:47. I'm not sure if they're all like that. I hope that helps. Good luck with it.

[@KevinNadeau]

Nice video and very informative. I noticed some fluid dripping from the bottom of my transfer case on my 2004 GMC Envoy. The fluid looked similar in color to yours (a reddish-brown). My first thought was the TC is leaking, but the fluid is not blue (GM AutoTrak). Wouldn't that be the transmission tail shaft leaking and not the TC?

[@ScubaMoto]

Kevin Nassau: I'm glad the video was helpful. The transfer case on the Suburban in the video uses Dexron VI which is red. Trace the leak. It sounds like your transfer case. Thanks for watching and for sharing.

[@Milkmans_Son]

Unless you put it in, don't assume the AutoTrak fluid is blue.

[@shunkajun]

I'm facing pretty much the same thing

[@ScubaMoto]

shunkajun: Fixing the transfer case leak with the two methods shown in the video shouldn't help or hurt your vibration, although you may discover something while doing the work. Without driving and inspecting your truck, I can't be sure what's causing the vibration. I've had tires cause it, drivelines, bent axles, bent wheels. Do you feel it in the steering wheel or more in the floor or your seat?

[@shunkajun]

@@ScubaMoto Hi thanks for responding, I feel the vibration through the floor, I had the wheels balanced but i do see an occasional leak of a small amount of fluid that might be only part of a larger problem? thanks again

[@jaimerubio2683]

Hey man i have a 2003 chevy express 1500. At the slip yoke it have small hole on the midle thats normal? Or need to replace it? Thanks

[@ScubaMoto]

The hole is normal. It's a weep hole meant to expel water and mud away from the bearing. If transfer case fluid is dripping out of the hole, then the seal has failed.

[@BDJ4mTex]

You're a legend my guy. Like and subscribe.

[@ScubaMoto]

I'm glad I could help. Thanks for the comment and sub.

[@2Amack]

Is the transfer case oil the same as the transmission fluid ? Is this basically changing the transmission oil ?? I have 2002 Tahoe and the slip Yoke has been leaking.. so is that transmission oil leaking or transfer case oil ?

[@ScubaMoto]

The transfer case in the Suburban in the video uses Dexron VI transmission fluid and it is leaking through the slip yoke. The transmission and transfer case do not share fluid.

[@edgardomatos7742]

This may be a stupid question. But im not sure. Fluid to add is trans fluid ? You make it look easy.

[@ScubaMoto]

The transfer case for truck in the video uses Dexron VI (10-9243).

[@edgardomatos7742]

@@ScubaMoto oh ok thanks ....

[@brettboone1062]

Great video, one question, why does the weep hole on the seal face down?

[@brettboone1062]

And two thumbs up for the tin can tip on getting the new seal installed!

[@ScubaMoto]

Brett Boone: Thanks for the compliment. I'm glad the video helped. The shaft seal unit has two parts, the actual shaft seal and the rubber mud guard. When water makes its way into the rubber guard, you want it all to drain out. The weep hole helps expel the water faster. If the weep hole were on top, it would become an inlet for mud, water and other debris that would now be trapped inside the rubber guard. Thanks for watching and for sharing.

[@kkoch666]

Hey Brett, a weep hole is a weep hole..

[@jesusber3997]

Same problem out of my 2008 gmc sierra 1500 2wd but my slip yoke has a hole in the center. Should i cover the hole with rtv gasket maker as well?

[@ScubaMoto]

Jesus Ber: Transmission output is different than transfer case. The hole in the center of the slip yoke at the transmission output on your truck is intentional and should not be leaking fluid. It's designed to allow air to pass as the slip yoke slides in and away from the transmission.

[@jesusber3997]

@@ScubaMoto Thats right. super thankx for the info. Will not cover that breather hole.

[@lyfzgoodgarage826]

How don’t you have more subscribers

[@ScubaMoto]

Thanks! That's a great question. Maybe I just need a wacky shop assistant, like a cat . . . or a horse maybe. Seriously, thanks much for the great comment it means a lot. I hope the video helped and pretty please hit the subscribe button.

[@FATMAC_365]

What kind of grease you used to fill the inside of the slip yoke

[@ScubaMoto]

For inside the slip-yoke I used a heavy multipurpose grease on the splines. For outside the slip-yoke a light coat of moly. There are many brands that will work including the Lucas "Red n Tacky" and the Valvoline Moly that are in the video description.

[@tawney9brian]

What about the metal sleeve that goes inside the transfer case? It’s like 3 inches long. How do I put that back in? It seems a bit tight to force.

[@ScubaMoto]

Brian Tawny: It sounds like you're referring to the outer surface of the slip yoke sliding into the new seal at 5:24 in the video. You'll notice I have it coated with some moly grease to help it slip into the new seal. If it won't slide in, try rotating it until it slides in. Remember that there is one flat spot on the splines that must be lined up with the corresponding grove in the output shaft. That's why I mention the blue dot in the video. If you no longer have an alignment mark, just keep rotating the drive shaft until it lines up with the notch in the output shaft. Then it should slip right on. Let us know how it goes.

[@jessemartz]

Thanks for the great video. Quick question. Will a 2004 GMC Yukon require crank case oil or is this ATF that is transferred into the fill plug? Thanks again buddy!

[@ScubaMoto]

jessemartz: No, not crank oil in the transfer case. AC Delco 10-4017 Auto-Trak II Transfer Case Fluid for your 2004 Yukon. I hope that helps.

[@jessemartz]

@@ScubaMoto Thanks as a lot buddy. 👍🏼😀

[@jessemartz]

Hi buddy. Me again. Sorry to bug you. I dropped the drive shaft and the slip yolk on my GMC Yukon had a hold dead center where you run your leak test. Apparently the compatible slip yolks I found all have holes. So when I run the leak test the alcohol comes straight out. Do you think the sealant you recommended will hold well on this hole. I’m sending you the link to the slip yolk: www.oreillyauto.com/detail/c/dorman-oe-solutions/dorman-oe-solutions-slip-yoke/doe0/697558/v/a/17894/automotive-suv-2004-gmc-yukon?q=Slip+yolk&pos=0#

[@ScubaMoto]

jeesemartz: Was your original slip yoke leaking through the hole?

[@jessemartz]

@@ScubaMoto it appears that’s the case because the mess is located in that area where you perform the leak test. The transfer case seal was removed and was old and hard, but it doesn’t appear that any leaks were coming from there. The leak is coming from that hole which leads me to believe that the hole was once covered and perhaps it came off. I did find someone online that provided the following link online: www.teckpak-fitzall.com/datasheets/35746ys.pdf

[@EmmAyeVee]

I was curious to know what the red and tacky was used on? also once the slip yoke seal is replaced. do I just add additional transmission fluid through the dipstick like usual?

[@ScubaMoto]

The Red and Tacky is just one more option other than molly to pack the splines. We're not working with the transmission, it's the transfer case. The transfer case has no dipstick. The transfer case has an upper (filler hole) and a lower (drain plug). The upper filler hole is the dipstick. Just fill until fluid backs out and then replace the filler plug. The vehicle in the video specs Dexron VI (10-9243) for the transfer case. I hope that helps.

[@EmmAyeVee]

@@ScubaMoto so the vehicle in the video is a 4wd. In my case, I have a 2wd, so I don't have a transfer case.

[@ScubaMoto]

Okay, got it. Then, yes, just top off the gearbox through the dipstick tube when you're finished.

[@EmmAyeVee]

Awesome. Thanks for the quick responses as well as the tutorial video! 👍🏻

[@jollymolotov5364]

GREAT, now my output shaft tastes like tomatoes. Thanks.

[@perryhanson7878]

What's the problem when you've replaces that ceal three times and about two thousand miles it starts again and all the ujoints have been rrplaced

[@paulinehaines358]

Just got my transfer put back in along with my transmission and it seems to be leaking bad where it sprayed the oil all over the back end of my truck. Not sure where the leak is.

[@ScubaMoto]

Pauline Haines: Sounds like a big job. Sorry to hear it showed you a leak after all your efforts. To find the leak you'll need to degrease everything and take a short drive so you can isolate the location. It works for me. This is why most transmission fluids are red. Good luck finding it and please let us all know where it shows up.

[@kw57rx8dr.9]

In case you haven't eaten your veggies lately, a short piece of 1.5" or 2" PVC pipe or a fitting maybe a better fit for that seal.

[@chicanoperez6377]

Would it be true for the side?? To the transmission it’s self.

[@ScubaMoto]

Just to be clear, you're referring to where the transfer case joins the transmission. There won't be the slip yoke leak that I fixed in the video; but there is a seal on the transfer case side that could be leaking. I would start by de-greasing the area and getting an exact on the leak source. You can do the replacement without complete removal of the xfer case but both drivelines need to come off and you do have to separate the case.

[@chicanoperez6377]

So what I was referring to is the tail shaft seal and also that portion of the yoke. Thanks for replying

[@rellik53977]

I have an 07 (new body style) Sierra 1500. The front transfer case seal keeps leaking. I’ve replaced it 3 times with a GM seal. Hit everything with emery cloth and made sure there is no burrs but it’s keep leaking. Any idea?

[@ScubaMoto]

rellik53977: I'm understanding that you have a persistent leak where the propeller shaft (front drive shaft) meets the transfer case. It is different than the rear seal in that no fluid travels up the slip yoke so only the shaft seal is holding in fluid. This seal is more vulnerable to mud. Mud is bad. If a new seal leaks, the possibilities are: (1)-Incorrect seal. This seems unlikely 3 times in a row but you can easily confirm on install by seeing if the seal fits the front output shaft snuggly. If it does fit snug, see number 4. If it doesn't, it still might be the correct seal (see number 3). (2)-There is damage to the transfer case where the outer seal race taps into the transfer case. This would be visible and you could likely even feel it with a probe or even see the damage. (3)-Soil damage to the outer surface of the front output shaft at the seal contact. This one is likely if the vehicle is used off-road, particularly "Mudding". Mud is liquid sandpaper. If it gets past the shaft mud guard to the seal, the seal becomes a lathe and spins down the shaft diameter making a tight seal impossible. It continues long after a mudding session as it is difficult to get mud out of that seal contact even with high pressure washing because of the metal shroud. It's hard to spot because the shaft is evenly worn so it still looks smooth and has no burs or gashes. (4) Worn output shaft bearing. If there is lateral movement in the shaft, it cannot maintain a good seal and will wear a new seal quickly. This one you would likely hear and feel when driving but it can also be caught by simply grabbing the shaft and feeling for excessive lateral play. If it moves a lot, there's an issue. I hope that helps.

[@jaywallace449]

Try putting a small amount of sealant around the inside lip of the new seal then install the seal .

[@seriousclasher7415]

just fought that on my Tahoe. Ended up being a crack just under the front output shaft seal. I replaced the front half of the case and all was good. The only bad part is the whole transfer case has to be dismantled and reassembled.