So I am leaving my car at school for about 3 weeks while I go home for xmas break. Anything I should do, besides setting the alarm, because I am letting it sit for while?

see if you can have someone drive it once a week and get it completely warmed up or else ....

Fill up your gas tank so no moisture gets in.

Park your car in a well lit place, hide all your valuables. Disable the remote trunk release by clicking the tab on the lock. Set your alarm, and try to use another level of protection like the club or something. I know it takes 20 seconds to cut it off, but that's 20 seconds a thief might not want to bother with.

Is your school in a good neighborhood?

SuDZ

Um...your car will be fine. Based on some of the prior posts...you'd think your car was sitting 3 months, not 3 weeks.

It will be ok...go home and enjoy Crimmas!

get a car cover, the ones you can use a lock on..i've used it a couple of times and it works great.. parked my car for 5 weeks each time with a full tank.. when i got back, it started right up. no probs