1997 Cadillac DeVille Question: the abs and traction lights are turning on

if you have an abs failure, the traction control stops working as well. when the abs is fixed, the trac light will go out as well. take it to a shop to have the abs checked and get a bid for repairs.
the running rough and the steering wheel issue have nothing to do with the abs. have a shop check the power steering fluid for leaks and give you a bid on those repairs.

Roy