Shortly after 4 PM I got a call from the dealership telling me that they'd fixed the fan switch on my van. My back had recovered sufficiently that I could make the walk down there. I surely needed the exercise. The total damage was slightly less than estimated -- $439 including tax. So the fan is now working properly. Tomorrow I need to get the oil changed and maybe get the tires rotated. And I still have to do my day job -- I have a conference call with the client at 8 AM Thursday morning, and I have some modeling to run before I send them results tonight.