Knocking steering

[TripleGee]

2005 Vz commodore. When I go lock to lock whether I'm move or staionary I have a vibration in the steering somewhere But I cant find where it is coming from when I put the car over a pit to check it out. Can anyone help me???? I'm desperate to find it and get rid of it

[RiCeY]

There is a revised (longer) high pressure power steering hose to cure shudder if youres hasnt already had it fitted.

Also check if your power steering fluid is airated as this will indicate other issues..