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Thread: No Lockup

  1. #11
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    Quote Originally Posted by max57 View Post
    From what I read TCC should apply above 72 degrees, I have had it warmer and still will not apply. I have not seen the tcmode change from OFF either.
    Ive been trying to find out if TCCES &TCCEP Failed means anything or not.
    Appreciate the help.
    Maybe, on my own vehicles (both gas), lockup doesnt occur until much warmer than that (I want to say~120F or so, but been a while since I logged it). Can take quite a while in the winter to get the trans up to temp.

    I'll keep thinking of other things...
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, starting the mods
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  2. #12
    New Member max57's Avatar
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    Quote Originally Posted by ScarabEpic22 View Post
    Maybe, on my own vehicles (both gas), lockup doesnt occur until much warmer than that (I want to say~120F or so, but been a while since I logged it). Can take quite a while in the winter to get the trans up to temp.

    I'll keep thinking of other things...
    I think it has been that warm while trying TCC but a will try again, if not Looks like Maybe a Quick 4 Controller is needed. No one seems to know the Parameters the TCM needs to kick the TCC on.

  3. #13
    Joe (Moderator) joecar's Avatar
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    Quote Originally Posted by max57 View Post
    Heres a better log.Attachment 23074. But I have 12v at brake light switch and it looses 12v when depressed as designed. But nothing at controller, that signal would be 12v also correct? Thanks joecar.
    Log shows that TCM never commanded TCC lock...
    Last edited by joecar; December 8th, 2019 at 06:36 PM.

  4. #14
    Joe (Moderator) joecar's Avatar
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    In your ctz file, the TCC release tables are set to 318 mph... this keeps your TCC unlocked.

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