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Thread: T42 4L80 file

  1. #1
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    Default T42 4L80 file

    Hello,

    Does anyone have a T42 4L80 file compatible with the following OS

    12590425, 24252956 or 24239927?

    Thanks

  2. #2
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    The first is an ECM OS, all T42 OS' I've seen start with 2. I have 24239927 from an 08 Express Van, I've attached the ECM and TCM files here. I have an 09 Express Van tune that has 12630501 for ECM and 24243356 for TCM, but not in EFILive format. There's an 07 T42 4L80E file around here on the forum somewhere, don't know what the OS # is for it though.
    ~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.

  3. #3
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    Default

    thanks!!!

  4. #4
    Joe (Moderator) joecar's Avatar
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    Thanks Erik.

  5. #5
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    Default

    I'll post what I have as well. I also have a t42 from a cobalt.

  6. #6
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    Default 24235341 2006 4l80 duramax


  7. #7
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    There is no way to force an OS in any of them? Has it been tried?

  8. #8
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    I don't believe there's a way to bypass the OS check and flash a non-matching OS into a T42. I haven't tried it in a long time (2-3 years now) though.
    ~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.

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