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Thread: trans case

  1. #1

    Default trans case

    Yo guys just signed in the forum. Question. is there a viscious coupler on a trans case for a 1999 Z71 chev silverado 5.3ltr with a 4l60e trans.

  2. #2
    Legend tlperry68's Avatar
    Join Date
    Oct 2008
    Huntington Beach, CA


    Do you have all wheel drive?
    Trevor - Huntington Beach, CA
    2007 GMC 2500 4X4

  3. #3


    The Autotrac (NV246) transfer case was optional. Do you have a lever to shift the 4wd or push buttons? If you have push buttons, does one of the buttons say "auto4wd"? What does the tag on the transfer case say? The 246 in my Suburban has a tag on the back side of the t-case that says New venture model 246 attached to it.

    Even then, I don't think it's a fluid based "viscous coupling". The manual I have calls it a "clutch pack", but, for your purposes, that's probably just semantics.
    '98 K1500 Suburban LS 5.7 L 4L60E NV246 ARB
    '92 Ford Explorer XLT 4x4 4.0 L A4LD BW13-54 Trac-loc rear
    "My toys were the greasy cogs and springs and pistons that lay around all over the place, and these, I can promise you, were far more fun to play with than most of the plastic rubbish children are given nowadays." Danny in Roald Dahl's Danny The Champion of the World

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