Buick 2006 Rendezvous - Manual (Page 369)

All-Wheel Drive
If you have an all-wheel-drive vehicle, be sure to
perform the lubricant checks described in this section.
All-wheel-drive vehicles have two additional systems
that need lubrication.
Transfer Case (Power Transfer Unit)
When to Check Lubricant
Refer to the Maintenance Schedule to determine
how often to check the lubricant. See Scheduled
Maintenance on page 6-4.
How to Check Lubricant
To get an accurate reading, the vehicle should be on
a level surface.
If the level is below the bottom of the filler plug hole,
located on the transfer case, you will need to add some
lubricant. Add enough lubricant to raise the level to
the bottom of the filler plug hole.
What to Use
Refer to the Maintenance Schedule to determine what
kind of lubricant to use. See Recommended Fluids
and Lubricants on page 6-12.
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