I got an 03 and it had like no rust before winter.. now there is quite a bit underneath The rockerpanels at the bottom paint is flaking.. got a big chip on my door. here are some pictures.

what should i do?!
http://www.jbodytuner.com
^^ The real jbody store!!!!!
You could just sand off the rust cause it doesn't look like its anything major, then just touch up with some primer and paint. Or you could take it to a local shop and have them do the repairs.
try to every week. but very seldom every other week.
http://www.jbodytuner.com
^^ The real jbody store!!!!!
splash guards probly would have stopped 99.9% of that.
97 Cavalier Z24 @ 85k
00 Cavalier Base Coupe @ 152k...rollin on 14's!
97 Grand Cherokee 5.2L@ 260k
Or some LS Sport skirts.
Dan Trump

2004 Cavalier LS Sport - Victory Red
I wash my car never during winter. Never had any problems. But afterwards she gets the once over with a wash, polish, polycoat and a wax.

-Chris