The multi-band antenna is on the roof of the vehicle. The antenna is used for the AM-FM radio, OnStar, the SiriusXM Satellite Radio Service System, and GPS (Global Positioning System), if the vehicle has these features. Keep the antenna clear of obstructions for clear reception.
Radio Reception
Audio PlayersAutomatic Transmission Shift Lock Control Function Check
Warning
When you are doing this inspection, the vehicle could move suddenly.
If the vehicle moves, you or others could be injured.
Before starting this check, be sure there is enough room around the vehicle.
It should be parked on a level surface.
Apply the parking brake. Be ready to app ...
Remote Keyless Entry (RKE) System
See Radio Frequency Statement on page 13-12.
If there is a decrease in the RKE operating range:
Check the distance. The transmitter may be too far from the vehicle.
Check the location. Other vehicles or objects may be blocking the signal.
Check the transmitter's battery.
See “Battery ...
OnStar Overview
Voice Command Button
Blue OnStar Button
Emergency Button
This vehicle may be equipped with a comprehensive, in-vehicle system that can
connect to a live OnStar Advisor for Emergency, Security, Navigation, Connection,
and Diagnostic Services. OnStar services may require a paid subscripti ...