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nsbu switch

  1. Trans. Will not select 1st or 2nd gear!

    911 Problems Forum
    I have a 2005 LLY, 4WD, Crew Cab with a 5 speed allison. The gear selector at the column was acting up, not going into park for several seconds, and would not go into 1st or 2nd at all. I changed the NSBU switch thinking it would fix my problems. It fixed the slow park engagement, but it still...