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Thread: 2015 G56 swap won’t start

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    2015 G56 swap won’t start

    2015 2500 limited with push button start. I pulled the 68RFE and swapped it with a G56. Got tune for manual trans. Everything installed but can’t get truck to crank over. Need help ASAP. Thanks in advance.


  2. Top Of Page | #2
    Permanent Vacation KeepEmRollin14's Avatar

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    Re: 2015 G56 swap won’t start

    Neutral safety switch working?


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  4. Top Of Page | #3

    Re: 2015 G56 swap won’t start

    Have it bypassed. But not sure if I have the pin4 on the auto trans connector correct


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    Permanent Vacation KeepEmRollin14's Avatar

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    Re: 2015 G56 swap won’t start

    I’d check there, then check to see if you have power to starter and start tracing backward. You will need to look at what circuits you need to test.


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  6. Top Of Page | #5

    Re: 2015 G56 swap won’t start

    I found pin for on the auto trans connector and have it grounded but the truck doesn’t seem to sensing it.


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    Re: 2015 G56 swap won’t start

    Something is keeping it from getting power


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  8. Top Of Page | #7
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    Re: 2015 G56 swap won’t start

    These trucks are real touchy, if its controlled by a module then it will be a problem I promise you that


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  9. Top Of Page | #8

    Re: 2015 G56 swap won’t start

    I have power at the starter.


  10. Top Of Page | #9

    Re: 2015 G56 swap won’t start

    Any info on the auto trans connector pin 4? Does it need to be done on the connector for the old trans or does it need to be from further up the harness?


  11. Top Of Page | #10
    Permanent Vacation KeepEmRollin14's Avatar

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    Re: 2015 G56 swap won’t start

    Did you remove anything else. Not sure if there is any tuning stuff that would need to be done with these newer trucks.


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