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Thread: 2015 L83 Stand Alone

  1. #1
    Lifetime Member
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    Feb 2016
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    Default 2015 L83 Stand Alone

    Team,

    I just bought a 2015 L83 (5.3l) and will be attempting to get it running pretty soon. I have a couple of concerns,

    1. Do I need to run a PWM fuel setup or can I just run a return line ?
    2. Do I need sensor inputs for vehicle speed to the ECM?
    3. What needs to be turned off or disabled in the tune so I can run this setup on an engine stand?

    Any other advice?

    Thanks!

  2. #2
    Lifetime Member
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    Feb 2016
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    Default

    Also, does anyone have a stock l83 tune for a 2015 Sierra that I could have?

  3. #3
    Lifetime Member GMPX's Avatar
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    Apr 2003
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    Default

    Did it come with the ECM ?
    I no longer monitor the forum, please either post your question or create a support ticket.

  4. #4
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    Default

    Quote Originally Posted by GMPX View Post
    Did it come with the ECM ?
    No it did not. The guy lost it when he moved from his old to new house.

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