See also:

OnStar Personal Identification Number (PIN)
A PIN is needed to access some of the OnStar services, like Remote Door Unlock and Stolen Vehicle Assistance. You will be prompted to change the PIN the first time when speaking with an Advi ...

Auto Door Unlock
This allows selection of which of the doors will automatically unlock when the vehicle is shifted into P (Park). Press SELECT when Auto Door Unlock is highlighted. Turn the Menu knob to selec ...

Satellite Radio
Vehicles with an XM™ satellite radio tuner and a valid XM satellite radio subscription can receive XM programming. ...