Oldsmobile 1999 Silhouette - Manual (Page 340)

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Windshield Wiper Blade Replacement
Windshield wiper blades should be inspected at least
twice a year for wear and cracking. See “Wiper Blade
Check” in Section 7 of this manual under Part B “Owner
Checks and Services” for more information.
Replacement blades come in different types and are
removed in different ways. For proper type and length,
see “Normal Maintenance Replacement Parts” in
the Index.
Here’s how to remove the Sheperd’s Hook type:
1. Turn the wipers on to the lowest intermittent setting.
2. Turn off the ignition while the wipers are at the outer
positions of the wipe pattern. The blades are more
accessible for removal/replacement while in
this position.
3. Pull the windshield wiper arm away from the
windshield or backglass.
4. While holding the wiper arm away from the glass,
push the release clip from under the blade
connecting point and pull the blade assembly down
toward the glass to remove it from the wiper arm.
5. Push the new wiper blade securely on the wiper arm
until you hear the release clip “click” into place.