See also:

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 ...

DIC Operation and Displays
The DIC comes on when the ignition is on. After a short delay the DIC will display the information that was last displayed before the engine was turned off. If a problem is detected, a warning m ...

Compass Operation
Press the on/off button once to turn the compass on or off. There is a compass display in the window in the upper right corner of the mirror face. The compass displays a maximum of two character ...