Geo 1995 Prizm Owner's Manual page 55

Rear Door Security Locks
Your Geo is equipped with rear door security locks that
help prevent passengers from opening the rear doors of
your car from the inside.
To use one of these locks:
1. Turn the knob so the bar points up and down.
2. Close the door.
3. Do the same thing to the other rear door lock.
The rear doors of your vehicle cannot be opened from
inside when this feature is in use.
If you want to open a rear door when the security lock is
on:
1. Unlock the door from the inside.
2. Then open the door from the outside.
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