1997 Oldsmobile Bravada Owner's Manual - Page 59

Power DoorLocks * + Rear Door Security Lock The power door lock switch is located on the armrest. Press LOCK to lock all the doors at once. With this feature, you can lock the rear doors so they can't be opened from the inside by passengers. Move the lock up to lock the doors and down to release the door locks. ;~.*. To unlock the doors, press the raised area next to the key symbol. The lever on each rear door works only that door's lock. Leaving Your Vehicle If you are leaving the vehicle, take your key, open your door and set the locks from inside. Then get out and close the door. 2-5