Pontiac 2004 GTO - Manual (Page 67)

There are several ways to unlock and lock your vehicle.
To unlock the doors from inside the vehicle, pull up
on the door lock knob. To lock the doors, press the knob
down. If you use the driver’s door lock knob, both
doors will lock or unlock.
Automatic transmission vehicles have an automatic
locking in DRIVE (D) feature which locks the doors
automatically when the transmission selector is shifted
out of PARK (P). To select this feature, see Vehicle
Personalization on page 2-32.
For safety reasons, vehicles cannot be locked using the
remote key if the key is in the ignition or if the driver’s
door is open.
To lock or unlock your vehicle from the outside, use
your key or the remote buttons on the key.
To lock the doors from the outside, do the following:
1. Insert the key in the driver’s door lock.
2. Turn the key towards the rear of the vehicle.
3. Then turn the key back to the vertical position and
remove.
The alarm system is not set using this method.
To unlock the doors from the outside, do the following:
1. Insert the key in the driver’s door lock.
2. Turn the key towards the front of the vehicle.
3. Then turn the key back to the vertical position and
remove.
The alarm system will go off as soon as a door is
opened. If this happens, turn the key in the ignition to
ON to shut off the alarm.
Leaving Your Vehicle
If you are leaving your vehicle, make sure that you lock
it and take the keys with you.
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