OnStar Description and Operation (UI3): Notes

WARNING: This page is about a different car, the 2019 Chevrolet Traverse. However, it is still accessible from the selected car via links, so may be relevant.

The Emergency Road Assistance Global Navigation Satellite System (ERA GLONASS) consists of the following components:

Telematics communication interface control module
Telematics two button assembly
Microphone
Cellular antenna
GPS antenna
Back up battery
Backup speaker

This system also interfaces with the factory installed vehicle audio system.