Detailed description, Communication: OnStar
OnStar means that the car is equipped with a telematics unit and an OnStar button for summoning help, guidance with several services and emergency assistance in the event of an accident. Contact the OnStar Call Centre simply by pressing the OnStar button. An operator will answer and provide answers to your questions or help. The system is only operational when you are in an area with AMPS coverage (US).
The system comprises a telematics unit with GPS unit, GPS antenna, OnStar button, microphone and mobile phone antenna. The GPS and phone antennae are integrated in the same unit and positioned on the roof of the car. The system uses the entertainment head unit to reproduce the voice of the operator.
The system calls the alarm center in the event of a collision in which the airbags were deployed. With the help of GPS, the car's position is located, which makes it easier for rescue workers to arrive to the scene more quickly. At the customer's request, the OnStar Call Centre can remote control the car's hazard warning lights and horn to aid rescuers in locating the car.
The telematics unit, radio and control panel communicate with each other via the I-bus.
The telematics unit has a flash memory, which means that additional features can be SPS programmed.