1999 Pontiac Sunfire Owner's Manual - Page 65
1999 Pontiac Sunfire Manual
Page 65 highlights
yellowblue Power Door Locks (If Equipped) You can lock or unlock all doors of your vehicle from the driver's or front passenger's door lock switch. Rear Door Security Lock (4-Door Models) Your vehicle is equipped with rear door security locks that help prevent passengers from opening the rear doors of your vehicle from the inside. To Use One of These Locks Push the lower portion of the switch to lock your doors. Push the upper portion of the switch to unlock your doors. The lever on each rear door works only that door's lock. It won't lock (or unlock) all of the doors -- that's a safety feature. 1. Use a key to move the lock all the way up. 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. 2-5