Chevrolet 2003 Venture Owner's Manual page 125

Sliding Door Lock
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If your vehicle is facing d lard on a steep
grade (15 percent or more), the door may not
stay open and
could
slam shut,
possiblyinjuring someone. To make sure the
door does not slam shut be sure to hold it
open until everyone is clear of the door, and
only then allow it to slowly close.
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