2005 Saturn Relay, power steering does not work at low speed.

Check for leaks is first. Then look at the serpentine belt, is it soaked with oil. Does the belt squeal at start up? check the tensioner. I replace both. Does the pump whine? gets louder when turning? replace the pump. The rack and pinion is the last on the list. Look at the boots and rack. Are they leaking badly?

The first thing you need to do is find the leak, then once that is repaired if the problem persists you need to have the pump pressure tested and if that is ok replace the rack and pinion steering gear.