This frig has an ice/water dispenser in the door. Recently, it started giving us a bonus: 1/4 cup of water with every batch of ice. Usually, we're filling on of our water bottles. We station the bottle in under the ice dispenser, push in and the other (water) dispenser pours water -- about a...
He replaced the dispenser paddle and that fixed it.
His model uses the exact same dispenser paddle as your model does: W10317253
This is the closest video I could locate that shows you how to replace it, you model is a side by side, but it should give you the general idea of how to replace it.