Bucketlist Blazer -Restomod build 6.6liter L8T

[NDM]

Originally Posted by ndm, post: 6338817, member: 3745

I think I may have a potentially aggravating issue brewing up for this swap. When I keyed on to test that everything would fire once I get fuel lines complete, I went to test the 6l90E trans and got an error message. No communication. After researching for a while, many people have had the same issue. I went through some of the troubleshooting steps that folks recommended and still I get no comms to the trans. I have a feeling that this will be a long process to figure out and fix the problem. I think the motor is going to fire right up again but I have a feeling that driving it may take some effort because of the tranny. Eventually I will get it. Hopefully it will not be as bad as I expect.

Replying to my own post. I found the issue with the no communication issue. When I posted the last post, I was on my way to a week long cruise. During the cruise, I concluded that there had to be something that I did during assembly when I converted from 2wd to 4wd. Well that was it. The barrel/ seal that inserts between the 6l90e tcm and the harness was not locked in properly. When you install the TEHCM controller (tcm) you have to seat the seal from the outside the trans into the controller and lock the lock inside the controller. It appears that I locked the lock before I seated the seal. It took me 5 min to fix.

1.Dropped the pan

2.Removed the harness connector

3.Unlocked the lock

4.Removed the seal

5.Reseated the seal

6.Locked the lock

7.Plugged the harness connector back in properly

8.Plugged the Holley 6l90e controller and verified that there was communication.

9.Said "F^ck Yeah"!



This means that the truck should in fact be able to drive once I finish the tank fab and running the remainder of the fuel lines. This is very good!

The seal that I am talking about is shown being unlocked at 4:49 and removed at 5:02 in this video

​https://www.youtube.com/watch?v=Q1d4yPzGx-A