Chevrolet 2002 Venture Owner's Manual page 416

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4. While holding the
wiper arm away from
the glass, push the
release clip from
under the blade.
5. Push the release clip at the connecting point of
the blade and the arm up. Then pull the blade
assembly down toward the glass to remove it
from the wiper arm.
6. Push the new wiper blade securely on the wiper arm
until you hear the release clip "click" into place.
7. Push the release clip, from Step 4, down to secure
the wiper blade into place.