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Thread: 4L60E Experts/Need Your Opinion On Tune?

  1. #1
    Junior Member
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    Aug 2008
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    Default 4L60E Experts/Need Your Opinion On Tune?

    i have a tune for a 04 yukon 5.3 w/ 4l60e and i included the tune so you can take a look at it and see if its ok to use in a stock unit, and make improvements if needed. thanks
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  2. #2
    Joe (Moderator) joecar's Avatar
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    Apr 2003
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    28,403

    Default

    Looks ok...

    When you run it, pay attention to:
    1. make sure it does not knock/ping/detonate;
    2. make sure LTFT's do not wander far from 0%;
    3. make sure TRQENG is sufficiently high (or trans will slip);
    4. make sure TFMPRS spikes up on each upshift;
    5. make sure each shift is correct and has some feel;
    6. make sure TCCMODE indicates the torque converter clutch is locking in 3rd and 4th;
    7. make sure TCCSLIP indicates very low/zero slip while TCC is locked.

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