See also:

Radio Menus
Radio menus are available for AM, FM, and XM, if equipped. Turn the Menu knob to open the main radio menu for that band. ...

Maintenance Requirements
Notice: Maintenance intervals, checks, inspections, replacement parts, and recommended fluids and lubricants as prescribed in this manual are necessary to keep your vehicle in good working conditi ...

Reporting Safety Defects to the Canadian Government
If you live in Canada, and you believe that the vehicle has a safety defect, notify Transport Canada immediately, and notify General Motors of Canada Limited. Call them at 1-800-333-0510 or write to: ...