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Thread: 4l80e w/o engine management for a mechanical diesel ( transmission stand alone )

  1. #1
    Carb and Points!
    Join Date
    Sep 2016

    4l80e w/o engine management for a mechanical diesel ( transmission stand alone )

    I have a 1998 gmc 2500 classic sierra with 5.7 and 4l80e and I'm removing the 5.7 and putting in a cummins diesel. I have almost everything lined up besides how to control the 4l80e. I found a few costly stand alone units, but someone recommended finding a "16196390" ecu and reprogramming it to just run the transmission using a few sensors (tps,tach, ect).

    After much googling I landed here. I installed both cats & tuner pro, but I dont see the bin file for 16196390 .

    Question 1:
    Is 16196390 the only computer I can use? could I get a different computer (1227747) and reprogram it as a transmission only controller?

    Question 2:
    If I can reprogram one of these controller to just run the transmission, could I test it in my truck by using an secondary transmission harness to wire it directly to 4l80e? So it would use the engine management from the original controller and use the transmission controller from the 'new' reprogrammed controller? It sounds silly, but i could easily debug issues while I have a working truck before I do the diesel swap.

    Question 3:
    Is there any option to just remove the engine management from my stock ecu and just use it a transmission controller?

  2. #2
    Super Moderator dave w's Avatar
    Join Date
    Feb 2011
    The 16197427 PCM can be configured to operate the 4L80E with TPS, Tach, VSS, power, ground and a custom PROM chip.

    I would first try the stock 98 VCM with a custom flash (delete engine management / retain TPS, Tach, VSS, power, ground) to control the 4L80E. If I was successful with the original 98 VCM, I would build a custom harness for the 98 VCM to clean things up.

    dave w

  3. #3
    Carb and Points!
    Join Date
    Sep 2016
    i found this website that contains a material list and also the pin layouts AND the bins... This is the answer.

  4. #4
    Fuel Injected!
    Join Date
    Sep 2013
    Tulsa, Ok
    Or this

    If it don't fit force it, if it don't force fit f&%@ it!

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