2001 Oldsmobile souliette over heating have change thermo, and water pump flushed everything

get the car to where it overheats,stop engine a nd make sure your fans won't start by disconnecting them. then place your handon different spots on the radiator. if you feel any cold spots you need a new radiator as it should be the same temp all over.if it's the same temp then check for aleaking head gasket/intake. a pressure check should do that.