See also:

OnStar®
If the vehicle has OnStar and you subscribe to the OnStar services, please refer to the OnStar Terms and Conditions for information on data collection and use. ...

Instrument Panel Overview
A. Air Vents . B. Headlamp High/Low-Beam Changer. Turn and Lane-Change Lever. See Turn and Lane-Change Signals . Driver Information Center (DIC) Buttons. See Driver Information Center (DIC) . ...

Additional Required Services
Every 12 000 km/7,500 Miles ► Rotate tires. Tires should be rotated every 12 000 km/ 7,500 miles. See Tire Rotation . At Each Fuel Stop ► Engine oil level check. See Engine Oil . ...