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Thread: 2016 L83 will not start

  1. #1
    Potential Tuner
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    2016 L83 will not start

    I have a L83 and 6L80 out of a 2016 Silverado that I have swapped into a 2003 Silverado. I am struggling to get it to fire off. It cranks and fires with starting fluid, but will not run. I have VATS, DoD and starter diagnostics disabled. I feel like I am missing something silly. Can someone help?

    2016Silverado_Mod.hpt

  2. #2
    Tuning Addict 5FDP's Avatar
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    Did you write entire for VATS removal?
    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
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    Do you have trouble codes? wich ones? whats the low side/high side fuel pressure?

  4. #4
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    I did write entire. Trouble codes are
    P057C brake pedal sensor circuit low
    P135A ignition coil supply voltage circuit 1
    P135B ignition coil supply voltage circuit 2

    Low side Fuel pressure 60psi.
    High side fuel pressure ~200psi while cranking 150rpm
    Last edited by dubya774; 05-17-2020 at 08:51 AM. Reason: Adding more information

  5. #5
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    Quote Originally Posted by dubya774 View Post
    I did write entire. Trouble codes are
    P057C brake pedal sensor circuit low
    P135A ignition coil supply voltage circuit 1
    P135B ignition coil supply voltage circuit 2

    Low side Fuel pressure 60psi.
    High side fuel pressure ~200psi while cranking 150rpm
    And no spark