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Unread 08-09-2017, 02:11 PM   #1
Join Date: May 2017
Posts: 33
Default Wailing whine when cold and moving

When I start up in the morning, and before the vehicle is fully warmed up, I hear a faint whine, which is more like a wail from the transfer case/Transmission area.
Goes away after about 20 minutes of driving. Pitch changes with engine note, but comes only when vehicle is in motion (have not heard in Park).
What could be the issue. I want to get it fixed before it becomes an issue

That said
  • Shifts are smooth
  • Center diff lock engages and disengages without issue
  • All oils were changed recently
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