4L60E round connector

[santon]

A friend of mine bought a used 4L60E transmission from Yukon/Tahoe and installed on its TB 2005. The "new" transmission itself looks very similar to that of TB, except for the bell housing and the rear part, which were removed and replaced by the parts from the old transmission. Unfortunately, the truck does not move after the swap. Is there a possibility that the pinot of the round connector on Yukon transmission is different from the pinot of the round connector of TB transmission?

 

[TJBaker57]

What year was the Yukon Transmission?

Do you know what colors are/were the plugs?

 

[santon]

The seller said the transmission was from 2005.
The round connector on the transmission is gray outside, green inside

 

[santon]

This is the "new" transmission

 

[TJBaker57]

I have read other swap threads about the web and connector colors seem to be often asked.

I was just parsing this thread here....

4L60E/ 65E/ 70E Pin-out - LS1TECH - Camaro and Firebird Forum Discussion

Automatic Transmission - 4L60E/ 65E/ 70E Pin-out - Electrical Connector Information for LSx (Gen-III/ IV SBC) Transmission (4L60E/ 4L65E/ 4L70E) Swaps. (4L80E/ 4L85E Transmission Electrical Connectors will not be discussed in this Thread). The 4L60E/ 4L65E/ 4L70E Family of Transmissions uses 3...

ls1tech.com

Seems like as far as the electrical side goes they should be the same if same year.

 

[TJBaker57]

Though I have never done this myself I see a lot of trans swap or install posts where some part of the pump gets broken by not being aligned correctly..

Again, I have no experience here beyond what I have seen posted here and there.

 

[santon]

Though I have never done this myself I see a lot of trans swap or install posts where some part of the pump gets broken by not being aligned correctly..

Again, I have no experience here beyond what I have seen posted here and there.

Yes, I also suspect the broken oil pump. The swap was done by experienced mechanic. I was there when the swap was done and noticed about the required spacing of the torque converter and the flexplate (1/8" - 3/16"). However, the mechanic seemed to ignore (or just did not hear) my remark and did not measure or use spacers during the TC installation. Then I left, and after a few hours, my friend told me that the truck does not move after the swap. The guy will try to get another transmission from the company that sold him this one. In any case, a second round of removal/install is required.

 

[Mooseman]

Key points for 4l60E removal/installation on 4.2L GMT360's

There seems to of been an unfortunate trend lately with people having transmission related issues, causing them to have to drop theirs. I've installed and removed the 4L60E a handful of times now on several GMT360's. During my times spent doing so, I've learned a few key things to look out for...

gmtnation.com

In there, it mentions the proper installation of the torque converter to the pump and what happens when it's not.

Torque Converter installation key point:
When reassembling, make sure the torque converter is fully seated as far back as it can go by turning it until it slides back, then rotating it around again until it slides back once more. If it's not seated properly, it'll break the plastic piece on the pump(can't recall the name of this piece)! You'll know it broke if the vehicle isn't moving in any gear you put it in.