Chevrolet 2006 Express Van Owner's Manual page 103

To open the rear doors from the outside, pull the handle
toward you to open the passenger side rear door first.
To open the driver side rear door, pull the latch release
at the inside edge of the door.
To close the rear doors, close the driver side rear door
first. Then, close the passenger side rear door.
Check to make sure both doors are completely closed.
2-13