All-Wheel Drive
If your vehicle is equipped with all-wheel-drive, this is an additional system that needs lubrication.
Transfer Case
When to Check Lubricant
It is not necessary to regularly check the transfer case 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

A. Drain Plug
B. Fill Plug
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
Refer to the Maintenance Schedule to determine what kind of lubricant to use. See Recommended Fluids and Lubricants.
See also:
Distracted Driving
Distraction comes in many forms and can take your focus from the task of driving.
Exercise good judgment and do not let other activities divert your attention away
from the road. Many local govern ...
SERVICE PARK BRAKE
For vehicles with the electric parking
brake, this message displays if a
problem is detected with the electric
parking brake system. See your
dealer for service. ...
Connections
OnStar Hands-Free Calling allows calls to be made and received from the
vehicle. The vehicle can also be controlled from a cell phone through the
OnStar mobile app. See www.onstar.com for coverage m ...






