It's been another month since I have posted about my Seville and nothing else has changed. I'm still dealing dealing with my more annoying than ever "Service Theft System" message on the DIC. I'm to the point now where I'm just ignoring it, because I'm sure it's a very expensive fix that isn't worth it on a $6k car.
My brakes were vibrating very badly so I finally took it in to repair them along with the inspection sticker. Turns out I had less than 2/32 on the rear pads and my fronts were warped. Got the whole shebang done for around $190. Not bad at all; also got them turned just to make sure I don't have any more problems. Brakes are smoother than glass; i've had the car since June 30th 2008 and they have never been this great.
My noisy "strut" has turned out to be the swaybar bushings; eventually I will get them replaced. For now, I'm going to ignore the squeeking. Best way is to turn up the radio and you can't hear a thing.
Still adore the car very much, though if I did it all over again I would definitely purchase a MagneRide '02-'03 STS in Blue Onyx, Black, White Diamond, or Crimson Red. Not that I don't love Sterling, but those 4 colors are my Top 4 favorite (in the correct order).