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Thread: TCC Locking in 1st ??

  1. #1

    TCC Locking in 1st ??

    All,
    I have a stock, recently rebuilt, 4L60e and I have used the Bluecat tool to apply changes with the hopes of extending this ol girls life. I also had a little input on some other things in an effort to dial it in (Force Motor, Shift pres, Timing) and the truck seems to be shifting good, I have the feel I like, but I have noticed that the TCC is locking in 1st gear. Looking over the table I have it maxed speed through 2nd so it should not apply until 3rd but there it is.
    I am sure I am missing something.
    Thanks
    Attached Files Attached Files

  2. #2
    Advanced Tuner 04silverado6.0's Avatar
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    If you add these 4 channels you would figure out that it is probably not locked in 1st. Pretty sure the 4l60e is incapable of first gear lockup?
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  3. #3
    Quote Originally Posted by 04silverado6.0 View Post
    If you add these 4 channels you would figure out that it is probably not locked in 1st. Pretty sure the 4l60e is incapable of first gear lockup?
    That is what I thought as well. Will log those and get back to you.

    Thanks

  4. #4
    Looks like I dont have TCC Line Press or TCC Desired slip.

  5. #5
    Tuner in Training
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    After.jpg

    This works fine on my 4L60E

  6. #6
    Quote Originally Posted by OddJack View Post
    After.jpg

    This works fine on my 4L60E
    Thanks.
    I believe , from what I have read having it in 3rd and fourth is best on the 4L60.

    Maybe someone can correct me.

  7. #7
    Quote Originally Posted by 04silverado6.0 View Post
    If you add these 4 channels you would figure out that it is probably not locked in 1st. Pretty sure the 4l60e is incapable of first gear lockup?
    Here is the log with the channels I had available from your suggestions.
    Attached Files Attached Files

  8. #8
    Tuning Addict blindsquirrel's Avatar
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    I do believe I would put this on the back burner until the other substantial problems are sorted, not everyone here keeps up with every thread and unmentioned potential other issues.

  9. #9
    Quote Originally Posted by blindsquirrel View Post
    I do believe I would put this on the back burner until the other substantial problems are sorted, not everyone here keeps up with every thread and unmentioned potential other issues.
    Totally understand. This is actually my daily driver, different truck all together.
    This one is about done which is why I went back to my other truck. Just ticking projects off the list. ha

  10. #10
    Advanced Tuner
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    Quote Originally Posted by 65sub View Post
    Here is the log with the channels I had available from your suggestions.
    Your converter clutch is commanded and is functioning as it should. It only commands it to lock in 4th and that's what it does. You are missing one PID in there that is crucial and that is the TCC Enable solenoid command. With HP Tuners it is a bit tricky to get hat PID they usually have it listed as TCC mode. But anyway nothing to worry about at all, it does not lock in first gear, all is workign great lock-up wise assuming you only want it to come on in 4th and you want it to have zero slip when it does.
    Robert Moreau
    Technical Sales and Marketing Support Specialist
    TransGo
    2621 Merced Avenue El Monte, CA 91733 USA
    Calibration | Innovation |Performance
    https://transgo.com/our-products/

  11. #11
    Quote Originally Posted by TransGo Robert View Post
    Your converter clutch is commanded and is functioning as it should. It only commands it to lock in 4th and that's what it does. You are missing one PID in there that is crucial and that is the TCC Enable solenoid command. With HP Tuners it is a bit tricky to get hat PID they usually have it listed as TCC mode. But anyway nothing to worry about at all, it does not lock in first gear, all is workign great lock-up wise assuming you only want it to come on in 4th and you want it to have zero slip when it does.
    Awesome, thank you for taking a look. I am not entirely sure of the "best" way to set up the 4l60 to live its best life. This was a recommendation from another trusted user.
    Any thoughts , comments, suggestions? I know I have read that locking in 3rd may be better for the 60

  12. #12
    Advanced Tuner
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    Quote Originally Posted by 65sub View Post
    Awesome, thank you for taking a look. I am not entirely sure of the "best" way to set up the 4l60 to live its best life. This was a recommendation from another trusted user.
    Any thoughts , comments, suggestions? I know I have read that locking in 3rd may be better for the 60
    Not much you can do on the computer side to help a 4L60E, it is not like a modern design clutch to clutch shifting transmission. If you want to make it last longer or handle more torque, you are much better off modifying the transmission itself.
    Robert Moreau
    Technical Sales and Marketing Support Specialist
    TransGo
    2621 Merced Avenue El Monte, CA 91733 USA
    Calibration | Innovation |Performance
    https://transgo.com/our-products/

  13. #13
    Quote Originally Posted by TransGo Robert View Post
    Not much you can do on the computer side to help a 4L60E, it is not like a modern design clutch to clutch shifting transmission. If you want to make it last longer or handle more torque, you are much better off modifying the transmission itself.
    Understood. Thank you, I appreciate it.