Programmable Unlocking Feature - Chevrolet 2009 TrailBlazer Owner's Manual

3. You are now ready to program the automatic door
locks. Select one of the two programming options
listed previously, and press the lock side of the
power door lock switch to cycle through the
lock options. You will have 30 seconds to begin
programming. If you exceed the 30-second limit,
the locks will automatically lock and unlock and the
horn will chirp twice to indicate that you have left
the program mode. If this occurs, repeat the
procedure beginning with Step 1 to re-enter the
programming mode.
You can exit the program mode any time by turning the
ignition to ON/RUN. The locks will automatically lock
and unlock and the horn will chirp twice to indicate that
you are leaving the program mode. If the lock/unlock
switches are not pressed while in the programming
mode, the current auto lock/unlock setting will not be
modified.
See your dealer for more information.
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Programmable Unlocking Feature

The following is the list of available programming
options:
Mode 1: Driver's door unlocks when the transmission is
shifted into (P) Park.
Mode 2: All doors unlock when the transmission is
shifted into (P) Park.
Mode 3: All doors unlock when the key is removed
from the ignition.
Mode 4: No automatic door unlock.
The automatic door locks were pre-programmed at the
factory to unlock all doors once the transmission is
shifted to (P) Park. The following instructions detail how
to program your door locks differently than the factory
setting. Choose one of the four programming options
listed previously before entering the program mode.