All-Wheel Drive
When to Check Lubricant
It is not necessary to regularly check fluid unless you suspect there is a leak or you hear an unusual noise. A fluid loss could indicate a problem. Have it inspected and repaired.
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’ll need to add some lubricant. Add enough lubricant to raise the level to the bottom of the filler plug hole.
Use care not to overtighten the plug.
What to Use
To determine what kind of lubricant to use.
See also:
2011 Buick Regal Review
More than a few surprises have accompanied the rebirth of General Motors.
Chief among them is the resurgence of Buick, which was chosen as one of just
four brands GM kept alive, even as it euthani ...
Manual Mode
Driver Shift Control (DSC)
Notice: If you drive the vehicle at a high rpm without upshifting while using Driver Shift Control (DSC), you could damage the vehicle. Always upshift when necessary while ...
Compass
The vehicle may have a compass
display in the Driver Information
Center (DIC). See Compass for more information. ...
