Hi.. Wondered if it is common for the power steering pump on a 1.1Gsi Getz to whine on full lock, left & right. There is vibration through the steering wheel which is quite pronounced on a straight road. The pump seems to be cavitating or losing pressure? The Power steering hose has been replaced recently, all levels ok in reservoir. Would a belt replacement to the pump be a good starting point, as that is the cheapest component to replace, Wonder if any users have had experience with this or could it be an issue related to the steering rack? Grateful for any ideas.