See also:

DIC Compass
Your vehicle may have a compass in the Driver Information Center (DIC). The information below explains how to operate this feature in the DIC. If your vehicle has a compass in the mirror, see C ...

Brake Adjustment
Every time the brakes are applied, with or without the vehicle moving, the brakes adjust for wear. ...

Transferring Service
Push to request account transfer eligibility information. The Advisor can assist in canceling or removing account information. If OnStar receives information that vehicle ownership has chan ...