After bleeding the power steering the pump may make a noise because there isn't enough power steering fluid in it.
If you mean "what" is making noise when you turn the steering wheel? It usaually means you need power steering fluid. If you run too long without power steering fluid it will make your power steering go out. If it is making a shuttering noise when you take sharp turns. Your rear differential may need to be serviced. I would have is burnished.
check your power steering fluid
power steering fluid not filled?
Yes it does. Check your power steering fluid level.
check the power steering fluid level. I would have to say your low on fluid.
Check the fluid in the power steering. If it is low the car will make noise when you turn the wheel.
It is likely to be the power steering pump complaining that the power steering fluid is low.
It's not supposed to.
check the fluid level in the power steering reservoir and make sure it's where it should be.
If your power steering pump makes a whining noise as you turn your steering wheel your power steering fluid reservoir is probably empty. The noise is caused when your power steering pump tries to pump fluid that is not there. This indicates that you probably have a leak somewhere in your power steering fluid lines. You can either try to find the leak or simply replace the power steering fluid every so often.
Most power steering noise is caused by low fluid level. Check level in reservior. Other check is make sure belt is tight.