GMC 2015 Sierra Owner's Manual page 224

3. Wait until after the beep
completes, then clearly speak
one of the commands described
in this section.
Press to interrupt any voice
recognition system prompt. For
example, if the prompt seems to
be taking too long to finish,
press again and the beep
should happen right away.
There are two voice prompt modes
supported:
Long verbal prompts: The longer
prompts provide more
information regarding the
supported actions.
Short prompts: The short
prompts provide simple
instructions about what can be
stated.
If a command is not spoken, the
voice recognition system says a
help prompt.
Prompts and Screen Displays
While a voice recognition session is
active, there will be corresponding
buttons on screens displayed.
Manual interaction in the voice
recognition session is permitted.
Interaction during a voice session
may be completed entirely using
voice commands, or some
selections may expedite a session.
If a selection is made using a
manual control, the dialog will
progress in the same way as if the
selection was made through a voice
command. Once the system is able
to complete the task, or the session
is terminated, the voice recognition
dialog stops.
An example of this type of manual
intervention is pressing on an entry
of a displayed number list instead of
speaking the number associated
with the entry desired.
Canceling Voice Recognition
Press the Home screen button
to terminate the voice
recognition session which was
Infotainment System
initiated by pressing
infotainment screen on the
center stack.
Press or say Cancel or Exit to
terminate the voice recognition
session and display the screen
from which voice recognition
was initiated.
Press on the steering wheel
controls to terminate the voice
session and display the screen
from which voice recognition
was initiated.
Helpful Hints for Speaking
Commands
Voice recognition can understand
commands that are either naturally
stated in sentence form (English
only), or direct commands that state
the application and the task.
For languages that do not support
natural language commands in
sentence form, use the direct
commands shown as examples on
the display screen.
7-25
on the