Pontiac 2003 Bonneville Owner's Manual page 76

To unlock the door from the outside, use your door key
or remote keyless entry transmitter (if equipped).
Turning the door key toward the rear of the vehicle will
unlock the door. Turning the door key toward the
front of the vehicle will lock it.
To lock the door from the inside, push the manual door
lock forward. To unlock the door, push the manual
door lock rearward.
Central Door Unlocking System
If your vehicle has a theft-deterrent system, all doors
will unlock if the key is held in the outside key cylinder
unlock position for more than two seconds. The
doors will also unlock if the key is turned to the unlock
position twice in three seconds.
Power Door Locks
With power
door
locks, you
can lock or unlock all the
doors on your vehicle
using the driver's or front
passenger's door lock
switch.
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