Help with trans case

Discussion in 'Transfer Cases' started by rummie, Jan 5, 2017.

  1. rummie

    rummie Newbie

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    Hi, so I'm working on fixing my 4wd. And I'm looking for parts, when I do search, it's asking which rpo code I have for the case. I looked at the sticker in my glove box and it has NP1 and NP8 next to it. But when looking for parts it's either NP1 or NP8? I don't understand why, and which to get parts for.

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  2. DieselDetroit

    DieselDetroit I'm Awesome

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    What year is your truck?

    Np1 is 3 button push (2hi 4hi 4lo) button 4x4 from 97-98

    Np8 is 4 button and has an auto 4x4 option I believe for 99+

    Show us a pic. I find it surprising you have both rpo codes
     
  3. rummie

    rummie Newbie

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    1998 sierra

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