Using the Directory Command
The directory command lists all of the name tags stored by the system. To use the directory command:
1. Press and hold 
for two seconds.
The system
responds with “Ready” followed by a tone.
2. Say “Directory”. The system responds with “Directory” and then plays back all of the stored name tags. When the list is complete, the system returns to the main menu.
See also:
General Information
For service and parts needs, visit your dealer. You will receive genuine GM parts
and GM-trained and supported service people.
Genuine GM parts have one of these marks:
...
Radio Reception
You may experience frequency interference and
static during normal radio reception if items
such as cellphone chargers, vehicle convenience
accessories, and external electronic devices
are plugged ...
Satellite Radio
Vehicles with an XM™ satellite radio tuner and a valid XM satellite radio subscription
can receive XM programming. ...