Hey I have that same sound too. But after wheelin' in mine this afternoon...I don't hear it anymore...maybe it was on strike from riding on pavement for so long and she decided to fix herself!!!
No problems here and my dealer ran my VIN number and I was fine on the motor for the wipers.
build date was 10/7/02
~amy
Reality is merely a crutch for those with a broken imagination.~anon.
http://www.CelestialBath.com