Leaving Your Vehicle; Third Door - Chevrolet 2003 S10 Pickup Owner's Manual

Leaving Your Vehicle
If you are leaving the vehicle, take your keys, open your
door and set the locks from inside. Then get out and
close the door.
Third Door
Your vehicle may be equipped with a third door for
convenience in loading and unloading cargo.
To open the third door, first open the driver's front door.
Then, use the handle located on the front edge of the
door panel to open it.
You must close the third door before you can close the
driver's door.
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