2001 Cadillac Deville DTS

My 2001 cadillac deville dts had ONLY the service
engine lights on i took it to a shop to see why and
now theirs 4 lights on ABS Airbag Battery and
service light. I put in a new battery before that light
came on brand new. Why are all these ligjts on and
how do i make them go away? When i run the
dignositcs code reader on it it says no data for all
of them but the service light. So why are they on
and how do i make them go away?