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Thread: HELP!!! AFM won't enable....

  1. #1
    Lifetime Member GAMEOVER's Avatar
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    Default HELP!!! AFM won't enable....

    2008 Silverado (E38) (T42) 6.0ltr/4L70E (L76) OS-12617631-

    I disabled my AFM so I could check my MPG without the help of AFM and I saw what I needed, I re-flashed the ECM to enable AFM and it won't work even with a full Flash....Do I need a different(new) ECM? Any Ideas?
    Maybe there's a AFM fuse?

    I've tried disconnecting the battery and re-flashing like 5 times(2 Full Flashes)
    2008 2WD Ext.Cab Silverado 1500 6.0 V-MAX E38(L76) & T42(4L70E) MAF Only CL Corvette Servo AFE CAI INNOVATIVE LM-2 WBO2

    FLASHSCAN V2 & AUTOCAL

  2. #2
    Lifetime Member GAMEOVER's Avatar
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    If EFI Live disabled AFM it should enable it right?.....
    2008 2WD Ext.Cab Silverado 1500 6.0 V-MAX E38(L76) & T42(4L70E) MAF Only CL Corvette Servo AFE CAI INNOVATIVE LM-2 WBO2

    FLASHSCAN V2 & AUTOCAL

  3. #3
    Lifetime Member GMPX's Avatar
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    Certainly, if all you did was to Enable / Disable the AFM using the option (I'm assuming) then there is no technical reason it should not come back to life when re-enabled.

    Did you try flashing a file back from before you turned it off (like an older tune).

    Cheers,
    Ross
    I no longer monitor the forum, please either post your question or create a support ticket.

  4. #4
    Lifetime Member GAMEOVER's Avatar
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    No Ross,
    Thats the one thing I haven't done! I will try flashing an older tune file Tomorrow morning.....

    Thanks
    2008 2WD Ext.Cab Silverado 1500 6.0 V-MAX E38(L76) & T42(4L70E) MAF Only CL Corvette Servo AFE CAI INNOVATIVE LM-2 WBO2

    FLASHSCAN V2 & AUTOCAL

  5. #5
    Lifetime Member GAMEOVER's Avatar
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    Well, I tried flashing in an older Tune file and No Luck...AFM still will not enable
    2008 2WD Ext.Cab Silverado 1500 6.0 V-MAX E38(L76) & T42(4L70E) MAF Only CL Corvette Servo AFE CAI INNOVATIVE LM-2 WBO2

    FLASHSCAN V2 & AUTOCAL

  6. #6
    Member nycblazer's Avatar
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    did you get it fixed? let us know

  7. #7
    Lifetime Member GAMEOVER's Avatar
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    Yes, I got it to work...I had disabled the COT protection because of overly rich AFR condition at WOT and apparently AFM won't enable if COT is disabled...So i re-enable COT and it's been working ever since
    2008 2WD Ext.Cab Silverado 1500 6.0 V-MAX E38(L76) & T42(4L70E) MAF Only CL Corvette Servo AFE CAI INNOVATIVE LM-2 WBO2

    FLASHSCAN V2 & AUTOCAL

  8. #8
    Lifetime Member GMPX's Avatar
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    Thanks for letting us all know, I would never have thought of that.

    Cheers,
    Ross
    I no longer monitor the forum, please either post your question or create a support ticket.

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