Chevrolet Sonic Owner's Manual: Door Locks

Warning

Unlocked doors can be dangerous.

• Passengers, especially children, can easily open the doors and fall out of a moving vehicle. When a door is locked, the handle will not open it. The chance of being thrown out of the vehicle in a crash is increased if the doors are not locked. So, all passengers should wear safety belts properly and the doors should be locked whenever the vehicle is driven.
• Young children who get into unlocked vehicles may be unable to get out. A child can be overcome by extreme heat and can suffer permanent injuries or even death from heat stroke. Always lock the vehicle whenever leaving it.
• Outsiders can easily enter through an unlocked door when you slow down or stop the vehicle. Locking the doors can help prevent this from happening.

To lock or unlock the doors from outside the vehicle:

• Use the key in the driver door to lock all doors or unlock the driver door only.
• Press or
  on the Remote Keyless Entry (RKE)
  transmitter. See Remote Keyless Entry (RKE) System Operation.

To lock the doors from inside the vehicle:

• Press on the central locking
  switch or on the driver door switch.
• Press the lock knob on the driver door to lock all doors and, if equipped, the liftgate.

To unlock the doors from inside the vehicle:

• Press on the central locking
  switch or on the driver door switch.
• Pull the door handle. Pulling the door handle again unlatches the door.
• Lift the lock knob on the driver door to unlock the driver door.