GMC 2010 Sierra 1500 Crew Cab Owner's Manual page 354

The delete command allows specific name tags to be
deleted.
To use the delete command:
1. Press and hold
responds with Ready followed by a tone.
2. Say Delete . The system responds with Delete,
please say the name tag followed by a tone.
3. Say the name tag to be deleted. The system
responds with Would you like to delete, <name
tag>? Please say yes or no .
If the name tag is correct, say Yes to delete
the name tag. The system responds with
OK, deleting <name tag>, returning to the
main menu.
If the name tag is incorrect, say No . The
system responds with No. OK, let's try again,
please say the name tag.
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for two seconds. The system
The delete all name tags command deletes all stored
phone book name tags and route name tags for OnStar
(if present).
To use the delete all name tags command:
1. Press and hold
responds with Ready followed by a tone.
2. Say Delete all name tags . The system responds
with You are about to delete all name tags stored
in your phone directory and your route destination
directory. Are you sure you want to do this? Please
say yes or no.
Say Yes to delete all name tags.
Say No to cancel the function and return to
the main menu.
Calls can be made using the following commands:
Dial
Digit Dial
Call
Re dial
for two seconds. The system