See also:

Wiper Blade Replacement
Windshield wiper blades should be inspected for wear or cracking. See Scheduled Maintenance  for more information. It is a good idea to clean or replace the wiper blade assembly on a regular bas ...

Special Application Services
Severe Commercial Use Vehicles Only: Lubricate chassis components every 5 000 km/3,000 mi. Have underbody flushing service performed once a year. ...

Navigation
This display is used for the OnStar or Navigation System Turn-by-Turn guidance. See OnStar Overview or the navigation manual, if the vehicle has navigation, for more information. ...