I got a '99 Lumina last October with low miles for a very decent price. I think I know why now... When I got it, it had no problems, other than the power locks wouldn't work once in a while. They acted like they were stuck. Anyway, I drove it to work and back everyday, no problems - until it got cold. About a month ago, I went out on Monday morning after not driving it all weekend, and the battery was dead. Oddly, when I jumped it, the power locks flipped a couple times by themselves. I jumped it, and it was fine for the rest of the week, until the next Monday after a no driving weekend. Dead again. I then decided it was probably just a bad battery, and replaced it with a better one. It was fine for a couple of weeks, until today. Dead again, after the weekend of sitting. It seems I have a battery leak somewhere. I suspect the locks, so I pulled the fuse for them. Don't know if that fixed it or not. My question is this...is there an easy way I can hunt down the short using my multimeter? I'm thinking there must be a way to monitor the battery for drain while I pull each fuse, and see if the drain on the battery stops after each one. I'm fairly sure it's not the alternator, since the battery only dies after days of inactivity in a cold environment. I don't want to take it into the shop for something like this, they will charge me a ton for labor, and I know electrical problems can be some of the worst and most time consuming to pin down. Ideas?