Some vehicles may exhibit a condition where the windshield wipers chatter and/or wipe unevenly. Several items may contribute to this condition. To completely repair this condition, all of the items listed should be tested and repaired as necessary.

1. Perform the wiper arm pressure test. Refer to Wiper Arm Tip Pressure Check.
2. Inspect the wiper blade element set. Refer to Wiper Blade Element Check.
3. Clean the windshield glass. Refer to Windshield Glass Cleaning.