For 1990-2009 cars

1. Remove the wiper blades from the wiper arms. Refer to Windshield Wiper Blade Replacement .
2. Look down the length of the blade element.
3. Replace the wiper blade element if the rubber element which contacts the glass is not on the centerline of the blade +/-15 degrees. Refer to Wiper Blade Element Replacement .
4. Install the wiper blades on the wiper arms. Refer to Windshield Wiper Blade Replacement .