2002 Allison gear select functional test

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  • BRIAN617
    Senior Member
    • Dec 2016
    • 153

    2002 Allison gear select functional test

    2002 Silverado 2500HD 8.1L Allison 5spd

    Vin#1GCHK29G02E224187

    Verus Edge 19.4

    No option in functional test menu for gear select command.

    Shop Key lists it as a diagnostic step.

    My $300 HP Tuners has the capability.
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