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Thread: looking for a stock file

  1. #1
    Junior Member
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    Default looking for a stock file

    OS 12644094
    VIN 1GT121C88DF102946

    looking for a stock file didnt know if anyone had one thanks for the help!

  2. #2
    Lifetime Member GMC-2002-Dmax's Avatar
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    That Vin is a 2013 or 2014 model LML
    www.mscservices.net


    Tuner of many, many Duramax and Cummins Diesels.


  3. #3
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    Default

    its a 2013

  4. #4
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    Still looking for a file to match these segments Click image for larger version. 

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  5. #5
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    Hi, OS 12644094 in a 2013 normally mean the ecm was flash with a H&S delete file, OS 12644094 was a very early OP in model 2011, H&S used it on 2011,2012,1013 truck

  6. #6
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    any idea what the correct os should be then? and will that os work fine to flash it back with then?

  7. #7
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    When you need calibration info , go to https://tis2web.service.gm.com/tis2web/
    input your vin, choose ecm , and you will see the latest calibration release for the vin
    Click image for larger version. 

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    you can look here https://www.dropbox.com/sh/uujqht8m8...nav_tracking=1
    to search for a file that match your needs, keep in mind that efilive can't make a backup of the actual ecm calibration , downloading a file to the ecm will overwrite the data

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