See also:

STEP ON BRAKE TO RELEASE PARK BRAKE
This message is displayed if you attempt to release the electric parking brake without the brake pedal applied. See Parking Brake for more information. ...

Navigation
This display is used for the OnStar or Navigation System Turn-by-Turn guidance. See OnStar Overview or the navigation manual, if the vehicle has navigation, for more information. ...

Leaving After Parking on a Hill
1. Apply and hold the brake pedal while you: 1.1. Start the engine. 1.2. Shift into a gear. 1.3. Release the parking brake. 2. Let up on the brake pedal. 3. Drive slowly until the trailer is ...