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Thread: 6l90e conversion

  1. #1
    Tuner in Training
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    Jan 2019
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    6l90e conversion

    My question is there a segment swap to install a 6l90e into a 06 2500hd? Has anyone done this already? If so what did you have to go through to do the install?

  2. #2
    Tuning Addict 5FDP's Avatar
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    May 2012
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    Rogers, MN
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    Not possible with a stock computer or anything segment swap related.

    The P59 never used a TCM and the 6L90e has the TCM that works over canbus with the E38+ style controllers.

    You would need to source a complete standalone controller and harness for the 6 speed transmission. I think someone makes it but I forget off hand.
    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.

  3. #3
    Senior Tuner
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    Mar 2011
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    PCS makes a standalone controller for the 6L80/90 applications.