stability controll problem? on 2004 Cadillac SRX

My 04 cadillac srx is doing alot os swaying. It seems as if it is riding on springs. Could this be due to the steering positioning sensor? My stability control did activate only accouple of times when it shoulden't have. Also the cruise control disengages by itself.

Asked by for the 2004 Cadillac SRX