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  1. C

    Internal mode switch help

    I need to replace the internal mode switch on my 2009 allison1000. Does the valve body have to come off first? I have rebuilt engines but never really worked on a tranny; is this a doable job? Special tools, little parts that go flying? Any insight is appreciated.
  2. C

    Looking for good,tranny shop in west Houston metro

    Anyone recommend a transmission shop in the west side of the Houston metro,area?
  3. C

    NSBU switch on 2009 Allison 1000?

    Sorry I no longer live in OC. This would be at your shop so fast!
  4. C

    NSBU switch on 2009 Allison 1000?

    Thanks for the insight. I will give a go at tracing it down
  5. C

    NSBU switch on 2009 Allison 1000?

    Best to just replace them both or is there a way to isolate which is the problem?
  6. C

    NSBU switch on 2009 Allison 1000?

    My truck went into limp mode "shift inhibited . . ." Code p708. Cleared code and tranny shifts hard or goes back into mode and can be reset by shift to N turn key and go until the tranny speed slows down and p708 all over. Having read several posts about this code, I went and picked up a new...
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