Sunfire Dash Lights

I have a 1997 Sunfire 2.2 and have been having problems with the dash board lights. Every couple of days all of the dash board lights come on and stay on (ie. brake, seatbelt, anti theft, air bag). When I disconnect the battery for about 20 min they go out and come back on within a couple of days or so. Any suggestions???

when the are on agoain take it up too a local autozone and have them scan the computer