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GMC 4X4 issues

Discussion in 'Chevy Trucks' started by Dewey, Jan 17, 2012.

  1. Dewey

    Dewey Senior Member
    Messages: 438

    I have a 99 GMC with the 6.5 Diesel in it with an auto Transmision...I had the transmission rebuilt a couple of weeks ago... While in the shop I had them replace a seal and change fluid in the transfercase.... Since then when I shift the Tcase into 4 HI It takes longer than it used to, and doesn't stay in 4X4 it will go in and pop out and sometimes stay out. If I put it in 4 Lo it seems to be ok... I took it back and they adjusted the linkage and thought it was ok... But it is not... Any ideas what else to look for ??
  2. Rusty Silence

    Rusty Silence Senior Member
    Messages: 140

    If you google the problem you'll find it's pretty common. I've looked into it before but don't remember what it was.
  3. leolkfrm

    leolkfrm PlowSite.com Addict
    Messages: 1,978

    sounds like the roller ball swith on the transfer case....also check that it is still properly plugged in