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Thread: 6t40 2 gen solenoids

  1. #1
    Potential Tuner
    Join Date
    Feb 2021

    Lightbulb 6t40 2 gen solenoids

    Hello. For many years I have been repairing automatic transmission 6t40. 1st generation known for its unreliable solenoids. And the 2nd generation has very reliable solenoids.

    Sometimes I convert the automatic transmission from 1st generation to 2. Changing the TCM module with solenoids, valve body, separator plate. Also a drum inside with 3 teflon rings and some wavy discs.

    For a very long time I have been interested in the question of how to make a 1st generation automatic transmission work with 2nd generation solenoids. Change PWM signal.

    I think this service will be in great demand.

  2. #2
    Advanced Tuner
    Join Date
    Aug 2016
    To clarify, you're saying if you swap the entire Gen2 valve body with the solenoids, separator plate, drum, and wavy discs into a Gen1 transmission, it works. But if you swap just the solenoids themselves it does not work?