See also:

SERVICE BRAKE ASSIST
This message displays if there is a problem with the brake system. The brake system warning light and the antilock brake system (ABS) warning light may also display on the instrument panel cl ...

Map Data Updates
The navigation map database is stored on a compact flash card. It is usable only in this type of navigation system, and will not function in other electronic devices. The map in the vehicle was ins ...

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 ...