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 vehicle is equipped with the Tire Pressure Monitoring System. If a diagnostics check is needed between e-mails, push 
, and an Advisor can run a check.
See also:
Center Console Storage
For vehicles with a center console storage, use the lever (A) on the front to
open. ...
Adding and Removing Categories
Categories cannot be added or removed while the vehicle is moving faster than 8 km/h (5 mph).
To add or remove a category:
1. Press the MENU button.
2. Press the softkey located below the XM CAT ta ...
Storing a Radio Station as a Favorite
To store a station as a favorite:
1. Tune to a radio station.
2. Press the FAV button to display the page where the station will be stored.
3. Press and hold one of the six softkeys until a beep so ...