2000 Pontiac Montana Steering problem

I have a 2000 Montana and am having troble with the power steering it is very hard to turn on right-hand turns but fine on left-hand turns. Anyone have any idea what might be causing this?

My best guess is that your steering rack is worn out. I would suggest that you have this checked a.s.a.p., before you find that you are suddenly unable to steer the van. More than one accident has been caused by a bad steering rack.