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Thread: OS look up please as TIS is down!

  1. #1
    Member TorqueMonster007's Avatar
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    Default OS look up please as TIS is down!

    I need to get the OS and all associated hardware for a 2015/2016 LML since TIS seems to be either hidden or no longer since the LML trucks are flash only. This truck has a trash tune and just looking to go back to 100% stock. See VIN info below.

    VIN: 1GT120E86FF677119
    GMC DENALI 4D, 4X4 STANDARD BED
    DOM: 09/16


    Currently have a stock file for a 15.5 LML but can't tell if it will be a mismatch as I do not want to cross LML OS's. The one I have for a different truck of ours is listed below.

    OS: 12667378
    Engine OS: 12666850
    Engine Diagnostics: 12666622
    Engine: 12667404
    Fuel System: 12667412
    System: 12667419
    Speedometer: 12667424
    Last edited by TorqueMonster007; February 20th, 2023 at 07:45 AM.
    2024 3500HD (SRW) Duramax Denali Reserve
    2021 Ram 4500 Limited (Horse Hauler)
    2016 LML 2500HD Duramax High Country with a little help
    2022 Yukon Denali

  2. #2
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    Calibration History for: Boot Software
    Part Number CVN Bulletin # Description
    12657305 N/A - Boot Software

    Calibration History for: Main Operating System
    Part Number CVN Bulletin # Description
    12667378 10A7F56D - New software to improve customer satisfaction with the Outside Air temperature accuracy displayed on HMI.
    12660993 9E077DA9 - Main Operating System

    Calibration History for: Engine
    Part Number CVN Bulletin # Description
    12667404 F3CD37FB - New calibration to improve customer satisfaction with the Outside Air temperature accuracy displayed on HMI.
    12660994 797A9CAB - Engine

    Calibration History for: Speedometer
    Part Number CVN Bulletin # Description
    12667424 11F02658 - New calibration to improve customer satisfaction with the Outside Air temperature accuracy displayed on HMI.
    12657694 625DC4ED - Speedometer

    Calibration History for: System
    Part Number CVN Bulletin # Description
    12667418 ED5384F9 - New calibration to improve customer satisfaction with the Outside Air temperature accuracy displayed on HMI.
    12664793 5D0BDC60 - New calibration for start of production.
    12657688 E46CCD44 - System

    Calibration History for: Fuel system
    Part Number CVN Bulletin # Description
    12667412 41F8A3C6 - New calibration to improve customer satisfaction with the Outside Air temperature accuracy displayed on HMI.
    12657682 4AB9D640 - Fuel System

    Calibration History for: Engine diagnostic
    Part Number CVN Bulletin # Description
    12666622 AD584BFC - New calibration to improve customer satisfaction with the Outside Air temperature accuracy displayed on HMI.
    12664787 318C413E - New calibration for start of production.
    12657677 3967B113 - Engine diagnostic

    Calibration History for: Engine Operation
    Part Number CVN Bulletin # Description
    12666850 F10C05CE - New calibration to improve customer satisfaction with the Outside Air temperature accuracy displayed on HMI.
    12664957 E4F4DC7D - New calibration for start of production.
    12657671 49DD1955 - Engine Operation

  3. #3
    Member TorqueMonster007's Avatar
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    Quote Originally Posted by In-Tech View Post
    Calibration History for: Boot Software
    Part Number CVN Bulletin # Description
    12657305 N/A - Boot Software

    Calibration History for: Main Operating System
    Part Number CVN Bulletin # Description
    12667378 10A7F56D - New software to improve customer satisfaction with the Outside Air temperature accuracy displayed on HMI.
    12660993 9E077DA9 - Main Operating System

    Calibration History for: Engine
    Part Number CVN Bulletin # Description
    12667404 F3CD37FB - New calibration to improve customer satisfaction with the Outside Air temperature accuracy displayed on HMI.
    12660994 797A9CAB - Engine

    Calibration History for: Speedometer
    Part Number CVN Bulletin # Description
    12667424 11F02658 - New calibration to improve customer satisfaction with the Outside Air temperature accuracy displayed on HMI.
    12657694 625DC4ED - Speedometer

    Calibration History for: System
    Part Number CVN Bulletin # Description
    12667418 ED5384F9 - New calibration to improve customer satisfaction with the Outside Air temperature accuracy displayed on HMI.
    12664793 5D0BDC60 - New calibration for start of production.
    12657688 E46CCD44 - System

    Calibration History for: Fuel system
    Part Number CVN Bulletin # Description
    12667412 41F8A3C6 - New calibration to improve customer satisfaction with the Outside Air temperature accuracy displayed on HMI.
    12657682 4AB9D640 - Fuel System

    Calibration History for: Engine diagnostic
    Part Number CVN Bulletin # Description
    12666622 AD584BFC - New calibration to improve customer satisfaction with the Outside Air temperature accuracy displayed on HMI.
    12664787 318C413E - New calibration for start of production.
    12657677 3967B113 - Engine diagnostic

    Calibration History for: Engine Operation
    Part Number CVN Bulletin # Description
    12666850 F10C05CE - New calibration to improve customer satisfaction with the Outside Air temperature accuracy displayed on HMI.
    12664957 E4F4DC7D - New calibration for start of production.
    12657671 49DD1955 - Engine Operation
    Thank you. I was able to sneak in the back door on TIS and find it. The original searchable link no longer works apparently.
    2024 3500HD (SRW) Duramax Denali Reserve
    2021 Ram 4500 Limited (Horse Hauler)
    2016 LML 2500HD Duramax High Country with a little help
    2022 Yukon Denali

  4. #4
    Member arinkuddy's Avatar
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    Quote Originally Posted by TorqueMonster007 View Post
    Thank you. I was able to sneak in the back door on TIS and find it. The original searchable link no longer works apparently.
    Hey could you PM me or post the tune you got here with System segment 12667418.

    Thanks,

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