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  1. C

    03 lb7 range shift inhibited

    Sounds to simple, but check the cooler lines for leaks/radiator and external cooler make sure transmission is full with the RIGHT FLUID ! 1ST one I built came back with this issue found out it was leaking up front, it will start throwing that inhibited range light on the dash when it's low on...
  2. C

    Allison 6sp: One Unique Range Shift Inhibited Problem

    I have the answer you seek Are you still having this problem?
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