Central Door Unlocking System - Chevrolet 2004 Epica Owner's Manual

From the inside, you can lock and unlock all of the
doors by pushing or pulling the manual door lock located
on the window sill on each door.
From the inside, you can also lock and unlock the doors
with the power door lock switches located on each
front door trim pad.
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Central Door Unlocking System

The central door unlocking system is activated from the
driver's door.
From the outside, you can lock or unlock all of the
doors on your vehicle from the driver's door by using
either the key or the remote keyless entry transmitter.
From the inside, you can lock or unlock all of the doors
using the driver's or the passenger's power door lock
switch. You can also lock or unlock all of the doors
by using the manual door lock on the driver's door.