Called almost everyone, but they didn't open until this morning. Left messages. A few have gotten back to me. The results:

Sav-Mor: Closed for the holiday. (I didn't even realize there WAS a holiday...)
Ed's: Booked up until Wednesday.
Ross's: Available.
Autobahn: I just hung up with Ross's when my wife shoved a phone in my face. Autobahn said they would work me in (I suspect maybe thanks to me name-dropping CapitalCougar). They were within a few miles, quite a bit closer than Ross's, so I dropped it off there. Guess we'll wait and see.

I'm hoping things are taken care of. Thanks to BYUisLife, CapitalCougar, TXSmith, CarolinaCoug, v1k0u6, and Abe, and special thanks to Choke for offering to spend part of his Saturday fixing a stranger's car.