GMC 2015 Sierra Owner's Manual page 225

7-26 Infotainment System
For best results:
Listen for the prompt and wait
for the beep before saying a
command or reply.
Say Help or look at the screen
display for commands.
Voice recognition system prompt
can be interrupted during a
prompt by pressing
For example, if the prompt
seems to be taking too long to
finish, or if what is being
prompted causes a need for an
immediate reply, press
and wait for the beep.
Speak the command naturally,
not too fast, not too slow. Use
direct commands without a lot of
extra words.
Usually Phone and Audio
commands can be spoken in a
single command.
For example, Call Dave Smith
at work, Play followed by the
artist or song name, or Tune
followed by the radio station
number.
There is no need to memorize
again.
specific command words. Direct
commands might be more clearly
understood by the system. An
example of a direct command would
be Call 555-1212. Examples of
these direct commands are
again
displayed on most of the screens
while a voice session is active.
If Phone or Phone Commands, is
stated, the system understands that
a phone call is requested and will
respond with questions until enough
details are gathered.
If the phone number has been
saved with a name and a place, the
direct command should include
both, for example Call Dave Smith
at work.
Using Voice Recognition for
List Options
When a list is displayed, a voice
prompt will ask to confirm or select
an option from that list. A selection
can be made by manually selecting
the item, or by speaking the line
number for the item to select.
When a screen contains a list,
options may be available but not
displayed. The list on a voice
recognition screen functions the
same as a list on other screens.
Scrolling can be used to help
display other entries from the list.
Manually scrolling or paging the list
on a screen during a voice
recognition session suspends the
current voice recognition event and
plays the prompt Make your
selection from the list using the
manual controls or press the Back
button to try again.
If manual selection takes more than
15 seconds, the session terminates
and prompts that it has timed out.