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:
Install the Cargo Cover
1. Hold the cartridge so that the pull-out shade faces the rear of the
vehicle.
2. Align the cartridge over the pins on the trim panels of the vehicle.
3. Push down on the cartridge to snap i ...
Navigation
OnStar navigation requires the Directions and Connections service plan.
Push to receive directions or have them sent to the vehicle navigation
screen. Destinations can also be forwarded to the veh ...
Ignition Positions
(Key Access)
The ignition switch can be turned to
four different positions.
To shift out of P (Park), the ignition
switch must be in ON/RUN or
ACC/ACCESSORY and the brake
pedal must be applied.
Notice: ...






