New build issues, 2003 4l80e with a 7603 os?

[Windsma]

Im currently having issues with my new build.
I just replaced the internal trans harness thinking it would fix my tcc cel. P2761(Leaky connector)
Trans ID 12586549 CVN:332D
Trans Diag 12577301 CVN:A37E

Unsure if I did the 80e segment swap correctly I used an 04 file from hpt.
Trans ID 12578772 CVN: 67F4
Trans Diag 12578790 CVN: DBD7

It did not fix it, then gave me the same tcc code and new solenoid a and b code. (P0753, P0758, P2761)
The only difference I see on the internal harness is the red power wire on 1-2 solenoid are opposite polarity from the oem plug.

When buying the new internal harness I noticed that 03/04 was the cut off year for different harnesses.
I cant remember how I swapped the 80e segment or if I swapped the engine segment to 5.3

Would the 2004 segment work with an 2003 trans? Or am I looking at a wiring issue?

my build:
P59 7603 OS DBW 5.3 Turbo 80e

[blindsquirrel]

Pinout on both sides of the 20-way are exactly the same for 2003 and 2005.

It's real common for the terminals to back out of the vehicle harness side connector any time it gets disconnected/reconnected.

[Windsma]

Would the reversed polarity on 1-2 solenoid cause issues to the other solenoids due to them pulling power from that leg?

[blindsquirrel]

I don't know what that even means, solenoids don't have polarity. The Shift & TCC solenoids have constant power through pin 'E' and grounds are supplied by the PCM.

screenshot.21-05-2023 09.12.37.png screenshot.21-05-2023 09.12.40.png

[blindsquirrel]

Can you post the files you're working with (your file and the one you pulled 80E segments from)? Some very small number of living humans are able to decipher the last 4 digits of an OS and get a year/make/model, but most of us cannot.

[Windsma]

Thanks BS,
the new internal harness on the 1-2 solenoid, polarity was reversed from the factory one. "E" supplying voltage to the other solenoids was reversed on the 1-2
I switched them and all CELs are gone now.

I installed an intercooler, first drive to the alignment shop and havent been able to get into boost since.


I think the converter is not locking up or its slipping.
logs and file attached.
test11wsloptransswap.hpt
gg.hpl
gg2.hpl

[Windsma]

I made some changes. still shows tcc off at 71% throttle
test11wsloptransswap.hptafterchanges.hpl

im to the point I think this fresh rebuilt trans needs to be pulled and sent back.

another log added more trans channels...nothing when floored.hpl

[blindsquirrel]

If you swap + & - to a solenoid it doesn't work backwards, it works the same either way. Solenoids don't have a correct polarity. I know you think whatever you did fixed it, but if it did you've discovered some new behavior that would make for many great papers submitted to scientific journals trying to explain how everything previously known about electrical theory was wrong.

[Windsma]

maybe I held my mouth right this time. Either way, i wanted to eliminate any possibilities so I put it back same as stock.