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Thread: Need Help With 2017 L83 Vats WONT RUN

  1. #1
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    Default Need Help With 2017 L83 Vats WONT RUN

    I've deleted the Vats, applied the patch, disabled the starter relay diagnostic. The engine will start, then immediately shut off like the vats is still active. Any help appreciated!
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  2. #2
    Lifetime Member GMPX's Avatar
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    Did you do a full flash of the ECM once the patch was applied?
    I no longer monitor the forum, please either post your question or create a support ticket.

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    Quote Originally Posted by GMPX View Post
    Did you do a full flash of the ECM once the patch was applied?
    Yes I did the full flash

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    Lifetime Member GMPX's Avatar
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    Did you change the starter type?
    I no longer monitor the forum, please either post your question or create a support ticket.

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    Quote Originally Posted by GMPX View Post
    Did you change the starter type?
    G1219 starter relay diagnostic? Yes, I changed it to disabled. This is driving me insane and the customer is getting inpatient

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    Lifetime Member GMPX's Avatar
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    I'll have a look at the file you posted.
    Customers are always impatient, don't stress
    I no longer monitor the forum, please either post your question or create a support ticket.

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    Lifetime Member GMPX's Avatar
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    Out of interest, have you checked the DTC's after you've attempted to start/run the engine?
    Also, these cut fuel and spark for VATS, might be worth a quick look to see if it is cutting spark when it dies, if it isn't then it might not be VATS related.
    I no longer monitor the forum, please either post your question or create a support ticket.

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    Quote Originally Posted by GMPX View Post
    Out of interest, have you checked the DTC's after you've attempted to start/run the engine?
    Also, these cut fuel and spark for VATS, might be worth a quick look to see if it is cutting spark when it dies, if it isn't then it might not be VATS related.
    It always has spark, its cutting fuel injector pulse

  9. #9
    Lifetime Member GMPX's Avatar
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    Ok so as I was saying, these ECM's cut fuel AND spark when VATS is active.
    Did you check DTC's after the engine shuts down?
    I no longer monitor the forum, please either post your question or create a support ticket.

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    Quote Originally Posted by GMPX View Post
    Ok so as I was saying, these ECM's cut fuel AND spark when VATS is active.
    Did you check DTC's after the engine shuts down?
    Ok, I triple checked, the ECM is cutting fuel and spark after the initial start. There are no active or pending codes.

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