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Thread: disable fpcm 2012 gmc

  1. #1
    Tuner in Training
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    Aug 2014
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    disable fpcm 2012 gmc

    How would i do this in hp tuners? any help would be great thanks guys

  2. #2
    Tuning Addict 5FDP's Avatar
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    What is FPCM??

    I looked in a 2011 file I have and can't figure out what you are asking.
    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
    Tuner in Training
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    Aug 2014
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    fuel pressure control module... i guess i should have dug a little before posting i found it. the trouble im having is i installed a stainless return line but left the fuel pressure sensor on the stock line and the pressure sensor isnt seeing any pressure so it signals the fpcm to basically flood my engine and it wont start

  4. #4
    Advanced Tuner =fast='s Avatar
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    Disabling the FPCM from the file will it work?

  5. #5
    Senior Tuner IDRIVEAG8GT's Avatar
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    It's fairly simple. Run a new 12 or 10 gauge power wire to your pump off a relay. From there you can yank the fuse out of the FPCM and delete the lost communication code. Enjoy.
    Gray Ghost- The abomination. 2007 Chevrolet Silverado CCSB. 98mm turbo, nitrous, 428LSX, Rossler 80E with a brake. Finally finished. 23 psi, no numbers, Slow as hell.

    PBM G8- Aluminum 364, twin Precision 67/66 turbos, 6L90 trans swap, CTS-V/Vaporworx fuel system, slowly making progress.

    Dads 2011 CTS-V- Stock bottom end, stock heads, LS9 cam, pullies, ported blower, ported TB, D3 goodies, and lots of nitrous.
    618/618 motor
    906/862 spray

    Caterpillar 50 Forklift- Duramax swap

  6. #6
    Advanced Tuner
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    If I just run the wire off to a relay and not yank the fuse and not erase the code will it still work?
    Or it will give problems?

    I'm about to instal a 450 in tank fuel pump wot bigger gauge wire to my truck.

  7. #7
    Tuner in Training
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    Aug 2014
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    the problem is something in the SD tune put the MAF tune back on and no problem at all. walbro 450 seems to be fine with the FPCM