See also:

Ignition Positions (Key Access)
The ignition switch can be turned to four different positions. To shift out of P (Park), the ignition switch must be in ON/RUN or ACC/ACCESSORY and the brake pedal must be applied. Notice: ...

Privacy
The complete OnStar Privacy Statement may be found at www.onstar.com. Privacy-sensitive users of wireless communications are cautioned that the privacy of any information sent via wireless c ...

Following Distance
Stay at least twice as far behind the vehicle ahead as you would when driving the vehicle without a trailer. This can help to avoid situations that require heavy braking and sudden turns. ...