Chevrolet 1999 Express Van Owner's Manual page 79

To close the sliding door from inside, grasp the inside
handle and slide the door toward the front of the vehicle
to a closed position.
Make sure the door is completely closed before driving
your vehicle.
60/40 Swing Out Side Door
-
To open the "60" (front) portion of a 60/40 door from
the outside, pull up on the handle and pull the handle
toward you.
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