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Thread: Custom OS For 2009 Silverado E38 VCM

  1. #1
    Advanced Tuner
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    Sep 2018
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    Custom OS For 2009 Silverado E38 VCM

    Hello,
    I'm hearing you can run a custom OS on my truck to replace the VVE table with the old style VE tables. Is this true and if so, how would I do this? I went to OS in my tune and I didn't see anything there to do this. Just four options and none of them replaced the VVE.
    Is there something else I have to do first? I've tried tunning the VVE for a while now and have a hard time getting it right. I'd like to go back to older style VE. I never really had problems with it.

    Thank you

  2. #2
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
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    Rogers, MN
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    If your computer shows nothing in the OS tab for an OS upgrade you can not do the upgrade. (assuming you are in advanced view)

    Only a few operating systems offer that feature. I mainly see it on 2012-2013 trucks being the most popular, not sure which ones have it from 07-09 and I rarely saw them or never on 2010-2011 trucks.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  3. #3
    Advanced Tuner
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    Sep 2018
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    Thank you. Guess I can't :-(. Would you happen to know what the patch called "Speed Density Air Mode Patch" does? If I use it do I have to write entire?

  4. #4
    Advanced Tuner
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    Dec 2011
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    San Antonio, TX
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    Quote Originally Posted by momotunes View Post
    Thank you. Guess I can't :-(. Would you happen to know what the patch called "Speed Density Air Mode Patch" does? If I use it do I have to write entire?
    I believe this is for allowing proper SD function. sometimes the Gen4 stuff acts weird with the MAF failed. You would have to write entire..

    Don't be afraid to use a card style MAF in a boosted gen4 application. They work great.
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