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Thread: Trans engine torque

  1. #1
    Potential Tuner
    Join Date
    May 2017
    Posts
    5

    Trans engine torque

    I have installed a 2019 L83 engine, mated to a 2010 6L80 transmission in my 1988 Silverado. Most things work, even if the TCM including the software is way older that the engine ECM. However, the transmission does not work as it should. Kick down does not work, hard shifting sometimes etc.
    When looking at VCM Suite trans engine torque is 1 Nm all the time. The engine torque is present though.
    Here is a link to a photo from VCM.

    https://www.dropbox.com/s/t75dp1sa3l..._1179.jpg?dl=0

    Is trans engine torque the same as engine torque? If so, should the ECM send the engine torque value to the TCM?

    Do you see any other issues in the list on the picture?

  2. #2
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
    Posts
    13,533
    Does the TCM calibration match the calibration that is in the L83 computer?

    If it does not, that is not helping. The TCM calibration needs to match the computer. So you can't run a 2010 TCM on a 2019 TCM tune file.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.