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    The dealer did not reinstall my original ECM. I...

    The dealer did not reinstall my original ECM. I now have it back in and it took the flash.

    Feel free to delete this thread unless you think it could be helpful to others.

    Phil
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    $0533 after diagnostics at dealership

    Hello,

    I just had my 09 Chev 2500hd at the shop getting diagnostics done on a weird ignition problem which they have yet to resolve. While they had it they reflashed my ECM and also tried another...
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