My power steering is leaking from cap...
on 2004 Pontiac Grand Prix

This morning the car was working fine and did not have any problems, but once I dropped my husband off at work the car got hard to turn and was making a winding/ rubbing noise. When I was at the stoplight, the car also started making a bubbling noise. Later we find out its leaking from the cap not the hose. Is there any suggestions to fix this issue?

Asked by for the 2004 Pontiac Grand Prix
Yes the power steering pump is failing...
Actually the bolt was loose we fixed it already but thank you
What bolt