I've been having an intermittent problem with the heater/AC fan on my van. We know what the problem is: Lisa looked into it last year and determined (and I agree) that I really need a new fan; however, she patched it together temporarily then, and it held together until this trip. During this trip, it started failing again. I could coax it back to life temporarily by wiggling the wires running into the motor, but it really needs replacing. So this morning I called the nearby GM dealership and made an appointment to have them replace it. We'll take it to the shop this afternoon when Lisa can follow me in.
While I don't like having to spend yet more money, at least I don't have to pay sales tax on the parts.
Update, 15:30: Dealership confirms that it's the blower fan, and quotes a price of a little over $150 $200 installed, which seems like a bargain to me. I should be able to collect it sometime tomorrow afternoon. They must know what the trick for getting the fan assembly out of the van is. Lisa and I tried it once and could see no way to do so without serious structural work.
Further Update, 16:30: They forgot to quote me the entire fan assembly including the cage that actually moves the air. Still doesn't seem too bad to me. Also, it's replacing an after-market blower with a GM part, which seems like a better thing to do.