Wipers went nuts

[Poseur]

Yes I did the search and read the posts. It seems it is the case on the wiper motor, yes? All the TSB's were for 03's only. Ours is an 04'and the symptoms are identical to those I read about from other folks.
What I am hoping I can get some advice on is how to get the dealer to actually address this issue. It has not happened again but stayed screwed up for 1 1/2 days.
The only thing that might have contributed to this condition was backing into the driveway. My driveway has an uphill slope to it. With the truck facing downhill in the rain an abnormal amount of water could find its way down the vents above the wiper motor. Normally I would pull in forward. Coincidence? probably. Any other ideas or opinions would be appreciated. Thanks