If you ever lose your key, your dealer will be able to help you get a new one, but just in case, make a duplicate and keep it in a safe place.
Door locks
There are several ways to lock and unlock your car. To open from the outside, use your key.
From the inside, to lock the door, move the lever on your door down.
To open the door, move the lever up.
Automatic door locks
Press the portion of the automatic switch marked "Lock" on any door to lock all doors at once.
Press the ribbed part of the switch to open all doors at once.
On the four-door model, the manual switch on each rear door only works for that door. It will not close (or will open) all doors are a safety feature.
There is an automatic switch on the passenger side of the rear door or trunk lid that can be used to close or open all doors.
On vehicles with rear doors, if the automatic switch is pressed with the doors open, all doors will close five seconds after the trunk lids are closed. If the trunk lids are closed, the vehicle doors will lock if the automatic switch is pressed.
Child safety locks
Thanks to this feature, you can lock the rear side doors so that they cannot be opened by passengers from the inside.
Move the button up to enter safe mode.
Slide the button down to return the door locks to their normal position.
When leaving the car, take your keys, open the door and lock it from the inside. Then get out and close the door.
(The article was borrowed from the website: «ChevyMan»)