Squeaky Steering - THANK YOU PHIL!!!

[Daveh2]

I am experiencing a whining/groaning noise when i turn ans accelerate beyong idle while turning through about 2500 rpm. After that it stops. In park I can recreate when i rev up to 2000 rpm and cycle the steerinf left to right. The dealer has replaced the power steering pump as well as updated the steering box with a new valve that was called for in a technical service bulletin. The fluid if full by the way. The dealer says "Hey its a big truck with big tires" They have given up. Also I have an annoying creek that will not go away when the suspension travels during a turn. Like a creak on the a-arms.