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    NSBU switch kit

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    Product Description

    Allison Transmission 29540479 NSBU Switch Kit 2001-2005 LB7 LLY 5-Speed  2 Plug

    One of the most common problems  with the Allison transmission is failure of the Neutral Safety Back Up switch. This switch is the dual plug style that can be  found on any 01-05 LB7 or LLY. We always recommend to visually checking the  switch on your transmission before ordering. This NSBU switch can be installed  with common hand tools.

    Some of the common symptoms of failure are listed here

    No start condition

    Gear shift indicator on  dash not following properly

    Trans stuck in limp  mode or fail safe

    DTC's set indicating  pressure switch codes

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