GMC 2002 Savana - Manual (Page 88)

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To open the rear doors from the outside, pull the handle
toward you to open the passenger’s side rear door first. To open the driver’s side rear door, pull the latch release
at the inside edge of the door.
Both rear doors can be opened past 90 degrees by
opening the doors past the first detent (90 degrees open),
then opening fully.
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.