Cadillac 2005 XLR Owner's Manual page 264

To use navigation voice recognition, do the following:
2. Clearly state one of the commands listed on the
following pages. For example, say "FM1".
3. The system will tell you the command being
implemented. For example, the system will
say "FM1 Radio" and change the audio system to
the FM1 source.
You can end voice recognition by not speaking any
commands. After about five seconds of silence,
the system will automatically cancel voice recognition.
At times, the system may not understand a spoken
command. If this happens, try again. If a spoken
command is not available, the system will provide
feedback based on availability.
While using voice recognition, make sure to keep
interior noise levels to a minimum. Otherwise, the
system might not recognize voice commands.
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1. Press the talk symbol
steering wheel control
and release it when
you hear a beep. The
audio system, if on,
will mute.
The system will only recognize commands spoken in
English.
Voice Recognition Commands
The following list shows all of the voice commands
available for the navigation system with a brief
description of each. To use the voice commands, refer
to the instructions listed previously.
Help Commands
These commands are universal and will enable you to
use the help prompts available from the system.
Map Help: This command will enable the system to
provide the available commands for the map screen.
Destination Help: This command will enable the
system to provide the available commands for entering
a destination.
Guidance Help: This command will enable the system
to provide the available commands for the guidance
method.
Radio Help: This command will enable the system to
provide the available commands for the radio.
Disc Help: This command will enable the system to
provide the available commands for the CD changer.