See also:

When to Check
Check the tires once a month or more. Do not forget the spare tire. See Full-Size Spare Tire   for additional information. ...

When the System Does Not Seem to Work Properly
The following messages may be displayed on the DIC: SERVICE PARKING ASSIST: If this message occurs, take the vehicle to your dealer for repair. PARKING ASSIST OFF: This message occurs if the drive ...

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the v ...