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Thread: 4L80E with 16168625 ECU, is this normal?

  1. #1
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    4L80E with 16168625 ECU, is this normal?

    I am bran new to this but I've been reading and searching.

    I have a 1994 G30 Van with 5.7 and 4L80E, and 16168625 ECU.
    I've found bins for 4L60E transmission with this ECU.
    I've found bins for 4L80E with different ECUs.
    Searching "4L80E 1616825" yields zero results.

    HELP!

  2. #2
    Super Moderator dave w's Avatar
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    I recently learned, the hard way, use a 16197427 PCM with the 4L80E.

    dave w

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    Quote Originally Posted by dave w View Post
    I recently learned, the hard way, use a 16197427 PCM with the 4L80E.

    dave w
    '

    Umm... This 16168625 is the PCM that came with this vehicle! With this engine and transmission!

  4. #4
    Super Moderator dave w's Avatar
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    The 4L80E used either definition $OE or $31. The 16168625 used definition $E6 (4L60E). I've yet to find a factory 16168625 PROM with definition $OE / $31.

    dave w

  5. #5
    Super Moderator dave w's Avatar
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    I had a member PM me with a question; "I'm just interested in what you learned the hard way? I appreciate your input." I decided to share the reply here, maybe others would benefit from my experience.

    I'll try to briefly summarize what happened.
    It started with a good plan, upgrade a 1987 K3500 7.4 liter / TH400 to a rebuilt 4L80E using 16168625 PCM.
    Step 1, upgrade to the 16168625, this went flawlessly!
    Step 2, install the 4L80E, this step was full of headaches because the 4L80E would not shift on the first test drive.
    Step 3, Troubleshooting - nothing wrong.
    Step 4, More troubleshooting - still nothing wrong.
    Step 5, Replace valve body - still nothing wrong.

    Step 6, Try to find a 16168625 4L80E .bin file - nothing, nothing and still nothing. There is not a factory 16168625 4L80E .bin file ... PEROID!!!
    Step 7, Try a 16197427 with the same Memcal, Moates.net adapter board and the same $31 .bin that was in the 16168625.
    Step 8, HAPPY DANCE!!! The transmission shifts!!!

    dave w

  6. #6
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    I don't know what to say, but this van has a 4L80E transmission, and the 16168625 PCM, came that way from the factory, and it has always ran and shifted fine.

    What's going on here?

  7. #7
    Super Moderator dave w's Avatar
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    Quote Originally Posted by wanderingturtle View Post
    I don't know what to say, but this van has a 4L80E transmission, and the 16168625 PCM, came that way from the factory, and it has always ran and shifted fine.

    What's going on here?
    Maybe doing the 4L80E upgrade caused the issue, seems unlikely because it worked in the end. Maybe there was a problem with the 16168625 PCM originally used, seems unlikely because the 16168625 tested fine in a 93 K1500 5.7 / 4L60E during the Step 3 troubleshooting.

    Can you post your .bin file? If you are unable to post your .bin, can you post the Broadcast Code (BCC). Maybe post a picture of the Memcal? I have worked with hundreds of .bin files for 93 ~ 95 Red / Blue PCM. I'm extremely interested in your .bin file!

    dave w

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    Quote Originally Posted by dave w View Post
    Can you post your .bin file? If you are unable to post your .bin, can you post the Broadcast Code (BCC). Maybe post a picture of the Memcal? I have worked with hundreds of .bin files for 93 ~ 95 Red / Blue PCM. I'm extremely interested in your .bin file!
    I'll have to figure out how to read the .bin from the memcal. I have the APU1 package from moates, so I presume that I can do it. Where can I find instructions for getting the .bin from the memcal?

  9. #9
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    If you have an APU1 you still need the Moates HDR1 Memcal header to read the stock .bin file from the chip. The stock chip plugs onto the HDR1 and then you plug the HDR1 into the APU1's ZIF socket.

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    You might want to read through my thread as there was a lot of discussion on this very subject.

    Back in January I was going through the same dilemma with the 16168625 PCM. I had pulled the 4L80e transmission and 16168625 controller from a 94 G30 van.

    Here's the info that is on the tag on my 16168625 ECM.

    Serv No 16168625 BJFJ
    *86BJFJK533217105*
    16197505
    *86BJFJK533217105*

    The BJFJ broadcast code is supposed to have been used with the 16196395 ECM and was for a 5.7 liter engine (the engine size I expected) and a 4L80e transmission, model year 1994.

    In the end I opted to follow Dave W's advice and switched to the 16197427 PCM and I haven't looked back :)


    Brad


    Last edited by dave w; 07-16-2016 at 05:06 PM.

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    Quote Originally Posted by dave w View Post
    I'm extremely interested in your .bin file!

    dave w
    Got it!
    Attached Files Attached Files

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    I also picked up a couple of this 7427 PCMs from a junkyard yesterday. Got them for 20 bucks each, no guarantee. I'm gonna try just modifying my bin to meet my needs, but I'll also try burning my bin to a chip and running it in those PCMs to see what happens.

    Oh, and ain't nobody got time to wait for yet another adaptor to be shipped!Attachment 10761

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    Here's what the top of my mem-cal looks like without the cover removedAttachment 10762

  14. #14
    Fuel Injected! jim_in_dorris's Avatar
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    I seem to remember reading that early and later 4l80e used different solenoids to shift, the early 4l80Es would work with an 8625, but the later 4l80Es used a pwm selenoid and the 8625 could not provide the pwm. I could be wrong, but I seem to remember reading that somewhere while I was researching the switch.
    Square body stepsides forever!!!

  15. #15
    Super Moderator dave w's Avatar
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    Based on the information available to me, BJDR is a 1994 definition $OE (4L80E) PCM 16196395.
    Superseded to BLHH / PCM 16197427 then superseded to BYXN / PCM 16197427

    dave w

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