GMC 2003 Sierra 1500 Pickup Owner's Manual page 98

To enter the program mode you need to do the
following:
1.
2.
3.
Beginning with the ignition in LOCK. Pull back on
the turn signal/multifunction lever all the way
toward you until flash-to-pass is activated, and hold
it
while you perform the next step.
Turn your key to RUN and LOCK twice. Then, with
the key in LOCK, release the turn
signal/multifunction lever. Once you do this, you will
hear the lock mechanism lock and unlock.
You are now ready to program the automatic door
locks. Select one of the following four programming
options and follow the instructions. You will have
thirty seconds to complete programming. If you
exceed the thirty-second limit, the locks will
automatically lock and unlock to indicate you have
left the program mode. If this occurs, repeat the
procedure beginning with Step 1. You can exit the
program mode any time by turning the ignition
to RUN (the locks will automatically lock and unlock
to indicate you are leaving the program mode.) If
the IocWunlock switches are not pressed while
in the programming mode, the automatic IocWunlock
setting will not be modified.
The following is a list of the available programming
options:
All doors IocWOnly the driver's door unlocks:
Press the lock side of the power door lock switch
on the door panel once and then the uniock
side once.
0
All doors locWAll doors unlock: Press the lock
side of the power door lock switch on the door
panel once, and then the unlock side twice.
*
All doors IocWNone of the doors unlock: Press
the lock side of the power door lock switch on the
door panel once, and then the unlock side three
times.
0
No
doors IocWNone of the doors unlock: Press
the lock side of the power door lock switch on the
door panel twice. This turns off the automatic
lock feature.
For more information, see your dealer.
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