See also:

Reactivation for Subsequent Owners
Push and follow the prompts to speak to an Advisor as soon as possible after acquiring the vehicle. The Advisor will update vehicle records and will explain the OnStar service offers and options ava ...

Playing the Radio
(Power/Volume): Press to turn the system on and off. Turn to increase or decrease the volume. For vehicles with a Rear Seat Entertainment (RSE) System, press and hold for more than two seconds to tu ...

Head Restraint Adjustment
Do not drive until the head restraints for all occupants are installed and adjusted properly. To achieve a comfortable seating position, change the seatback recline angle as little as necessary while ...