1998 - 2000 GM OBS K Truck w/4L80E Autotrack I (NP246) Transfer Case Removal Process (Chevy & GMC)

[@dustinw5527]

Thank you so much for taking the time to show this!!! The little details are a world of help! I am currently working on the same set up and have been searching for this. I am attempting to do this alone so wish a little fella some luck.. Thank you again.

[@JB-cy7ey]

Great video! Thanks for all the detail and not jump-cutting to make the video shorter like most everyone else does. Super helpful!

[@joemalone3099]

The video quality and the minute technical details of the process r OUTSTANDING ..by the way all your videos r high quality and very educational even better than manufacturers ones. THANK you SIR for your efforts and time for sharing your knowledge

[@djrowe10]

Man it must be nice working with such amazingly clean parts. Here in the Cleveland Ohio area winter just destroys our vehicles. I own a transmission business "power & performance shifters" and I enjoyed your video while appreciating your time teaching others. 👍

[@cbackerman]

Amazingly detailed video, thank you so much! For the time and energy spent. Gearing up for this project, and the details you cover are invaluable. Amazing teacher and freind.

[@josephmatthews5529]

Very nice video. Well done. Thanks.

[@thomasdavidson7367]

Nice vid. Thanks for

[@junkmatt]

Very helpful!

[@djrowe10]

Oh yeah in the future just using a pry bar behind the u joint and between the yoke, a hard jerk forward will pull it right out of yoke saddle and move drive shaft into transfer case. ❤

[@joestone2068]

Boil Tallia Dr you are quite the mechanic I hope you don’t mind but if I have any questions on these because I have one as well I would love to be able to share it with you Thanks Joe

[@tengzturiagaiii3185]

Hi, quick question.. can i replace the adopter without bring down the transfer case?

[@DrShock]

You'll have to pull the driveshaft of course, and all of the nuts retaining the transfer case to the adapter. Likely will need to remove the rear crossover that the transmission mounts to for clearance to get a jack in there to secure the transfer case as well. While I have never attempted it, I suspect you could finagle things enough to replace the adapter without dropping the transfer case. I imagine the highest chance of success, clearance wise, would be to pivot the transfer case 90 degrees at an angle to the adapter. It would be orders of magnitude easier to just bring it down though.

[@junkmatt]

How about how to put this back in! Your video was extremely useful in getting the old one out, but we're now struggling to fit the rebuilt one back into place.

[@DrShock]

I did not make a video on that because it's just the reversal of the removal steps I went over in this video. I would recommend you install the transmission first, then reinstall the transfer case (if you did have the transmission removed). I would suggest having a helper for the reinstall, rather than using a jack. I have found that having an extra pair of hands available gives you more flexibility to maneuver the unit into position around the transmission output shaft. Two adults can push this into position, balancing the unit just with their leg muscles, as this model is only around 85 pounds without the fluid.

[@orabates1823]

Wouldn`t it been easier to support the transmission with a transmission jack. Then you could have taken the transmission crossmember complete out of the way.

[@DrShock]

The transmission is of course on a transmission jack as shown, that's the only way to perform this operation (the 4L80E transmission weighs close to 300 lbs).

[@TheJeffe613]

👍🏼

[@aidenstefanson2175]

The only sure things in life are death, taxes, and Dr, Shock has already done the next job I need to do on my truck

[@rjm7168]

15 mm gear wrench huh ... did you mean ratcheting box wrench ... yeah, you did.

[@DrShock]

Gear wrench is the oem manufacturer of this sort of mechanism. Same as making a xerox.

[@rjm7168]

I usually just remove the transmisdion mount cross member.

[@rjm7168]

There is no reason to orient the driveshaft to the pinion yoke. I see this done all the time by amateurs and pros alije but it's a completely unnecessary and likely promulgated by erroneous youtube videos.

[@DrShock]

Well, you're seeing it because it actually does matter. The introduction of new vibrations and/or sounds is easily avoided by following that simple approach. And as if that were not enough, it's stated to do this right in the GM service manual by the engineers who designed the system.

[@phillipbremer7715]

ya six points hate 12 old ways old tools one thing or another rebuild term bullet proof no only way is change it all everytime leaks seals ineaged is term part- time lets just say all gets miles heat wear just junk like old 205 or even sm465 conversions adapt them splines sad dont build like use too oh had get out luck them hubs oh had push clutch ya old stuff build like heavy equipment machinery