Chevrolet 2000 Express Van Owner's Manual page 89

To open the rear portion of a 60/40 door from the
outside, pull the handle on the side of the rear door and
pull it towards you.
To close the side doors, close the rear door first. Then
close the front door. Check to make sure both doors are
completely closed.
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The front side swing out door has a check strap
assembly in the door frame to keep the door from
opening beyond 90 degrees.
To open the door beyond 90 degrees, close the door
partially, pull the check strap outward at the spring hole
and then open the door. When you close the door, the
check strap will automatically re
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engage.
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