Wiper and Washer Systems: Service and Repair

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.
^ Clean the windshield glass.
^ Clean the wiper blade elements
^ Perform the wiper arm pressure test
^ Inspect the wiper blade element set


Windshield Glass Cleaning
Clean the windshield with windshield cleaner, GM PN 1050011 or equivalent. The cleaner should not harm the paint finish or scratch the glass. The glass is clean when the water no longer beads, but sheets across the entire glass surface.


Blade Element Cleaning
Lift each blade assembly off of the windshield and clean the element with a cloth saturated with full strength washer solvent. Then rinse the blade assemblies with water.