Problem resolved.
I had the local dealership replace the wiper switch on the column. $175 for the part + labor + taxes and fees = $310 grand total. New wiper blades and washer fluid refill not included.
I had considered replacing the switch with a used part and doing the work myself. However, when I tried to take the steering column apart to get at the switch, I found that the way it is bolted in would require me to remove the steering wheel.