Four-Wheel-Drive Light

For vehicles equipped with the four-wheel-drive light, it comes on when a vehicle with a manual transfer case is shifted into four-wheel drive and the front axle engages.
Some delay between the shifting and the light coming on is normal.
See Four-Wheel Drive on page 9‑43 for more information.
See also:
Brake Fluid
The brake master cylinder reservoir is filled with DOT 3 brake fluid as indicated
on the reservoir cap. See Engine Compartment Overview on page 10‑6 for the location
of the reservoir.
The ...
Bluetooth
For vehicles equipped with Bluetooth capability, the system can interact with many cell phones, allowing:
• Placement and receipt of calls in a hands-free mode.
• Sharing of the cell phone’s a ...
Transferring Service
Push to request account transfer eligibility information. The Advisor can assist in canceling or removing account information. If OnStar receives information that vehicle ownership has changed, OnSta ...





