Transfer case noise

Discussion in 'GM Powertrain' started by Blueelectra, Apr 30, 2013.

  1. Blueelectra

    Blueelectra New Member

    Im new to the forum and I have a 2010 z71 with 102000 miles it has a clunk in the transfer case from what I can tell by turning the drive shafts. Any help would be appreciated.
  2. Pikey

    Pikey Moderator

    It may not be the transfer case, it could be a u joint. Do you know which transfer case you have? Is it an NP4? Np8? The rpo code list in the glove box should tell you.
  3. Blueelectra

    Blueelectra New Member

    Should I be looking for those letters and numbers or is it a code?
  4. Pikey

    Pikey Moderator

    it should have np8 or np4
  5. Blueelectra

    Blueelectra New Member

    The closest I saw was np5, it was in with all the other sets of letters and numbers on a sticker. I also checked the u joints there ok checked the slip yoke and lubed it with no change.
  6. donyms

    donyms New Member

    Welcome to the club, it's great to have you aboard. :glasses:
  7. Pikey

    Pikey Moderator

    NP5 is a leather wrapped steering wheel.
    NP1 Transfer Case, Electric Shift Control, 2 Speed

    NP2 Transfer Case, Manual Shift Control, 2 Speed

    NP3 Transfer Case, All-Wheel Drive

    NP5 Steering Wheel, Leather Wrapped

    NP8 Transfer Case Active, 2 Speed Push Button Control
  8. dsfloyd

    dsfloyd New Member

    check for it to be stamped or on a tag on the transfer case as well.
  9. mfleetwood

    mfleetwood Moderator

    Welcome to the Club!!!

    ****Moved thread to correct section****

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