Hi Flybynight I hope this works for you, unfortunately it didn’t for us, we even had a complete replacement wiper assembly, we tried thoroughly cleaning the glass as well. If you watch the driver side wiper blade when its in action, the noise comes from the change of direction of the blade which leads me to think that it is the rubber compound of the blade that is at fault. As I have previously said we changed the drivers side blade to a Bosch and we now have silent wipers as they should be.

Best of luck