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 ...

Horn
Press near or on the horn symbols on your steering wheel pad to sound the horn. ...

Trip/Fuel Menu Items
Press MENU on the turn signal lever until Trip/Fuel Information Menu is displayed. Use to scroll through the following menu items: • Digital Speedometer • Trip 1 • Trip 2 • Power ...