my locks are starting to.... lock up. I have a 98 DX coupe without power locks or windows. The driver's door used to unlock on the first click, but now it is jamming or something and takes 2-3 clicks. I'd like to fix this before i have to start getting in through the passenger side.

1. Is this a problem with the tumblers in the lock or the mechanisms after that?

Bonus. If I just bought a Cadillac, what would be the first modification you would make?

 

I had that kind of problem on my Del Sol. I removed the door panel and lubricated the lock mechanism with some like wd-40. Lock works great now. Not sure if it will help your situation though.

bonus... definitely get some killer subs and an amp, and a headunit if you don't have a good one. To sum it up, stereo system.