Oldsmobile 2002 Silhouette - Manual (Page 385)

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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.