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Thread: OS 12585950 Manual Trans File

  1. #1
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    OS 12585950 Manual Trans File

    Anyone have a man trans file so I can segment swap this auto to man conversion. Thank you!

  2. #2
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    How about a year make and model. I doubt there are very many people that have every OS number memorized.

  3. #3
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    2004 Silverado 5.3

  4. #4
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    have you checked all the 4.8 files in the repository?
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  5. #5
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    Yes

  6. #6
    Senior Tuner TheMechanic's Avatar
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    Searched through my library. Don't see a single manual trans with that OS.
    You're going to have to use a different OS.

  7. #7
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    In a pinch you can just disable all the auto trans stuff and tune away. You won't have reverse lockout but people have wired that to the brake switch.
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  8. #8
    Senior Tuner TheMechanic's Avatar
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    Pretty sure I have a Silverado of that year with a manual. It will need factory programming with SPS/Techline Connect. If you don't have anyone in your areas you could send your module to me and I can factory program it and put your tune on it.

  9. #9
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    Quote Originally Posted by hellbents-10 View Post
    2004 Silverado 5.3
    What is the VIN of the vehicle? I would almost bet there is an updated OS for it.

  10. #10
    Senior Tuner TheMechanic's Avatar
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    Quote Originally Posted by 2xLS1 View Post
    What is the VIN of the vehicle? I would almost bet there is an updated OS for it.
    Looks like it does. 12587603
    It only modifies engine oil life. Still nothing with a manual

  11. #11
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    Quote Originally Posted by TheMechanic View Post
    Looks like it does. 12587603
    It only modifies engine oil life. Still nothing with a manual
    Without knowing his VIN you can't say that OS is an update for his vehicle. And if it is there are a lot of M5 calibrations that use 12587603.

  12. #12
    Senior Tuner TheMechanic's Avatar
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    Quote Originally Posted by 2xLS1 View Post
    Without knowing his VIN you can't say that OS is an update for his vehicle. And if it is there are a lot of M5 calibrations that use 12587603.
    What I did is looked at approx 20 stock tunes of different variations and years that have that OS. All of them I ran through TIS. This was the only update I could find. You are correct. I do not have his VIN and I can not say with 100% certainty on other potential updates etc.

  13. #13
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    1GCEK19V54E119868

    Thanks for the help!

  14. #14
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    If you go to this site https://tis2web.service.opel.com/tis2web/ and enter your VIN and look at the complete history for your vehicle the PCM should have been updated at some time after production and contain all the following segments. If your main OS is still 12585950 then for whatever reason it never got the updated calibration from GM. These are all the correct segments it should have. Once it is updated there will be calibrations available with same OS to do the segment swap.
    12587603
    12587682
    12587940
    12602137
    12578787
    12578797
    12585937
    12578993