so i think i know the problem im just not sure. When im driving down the road at like 40ish and theres bend or curve in the road i feel a very weird almost like humm in the steering wheel, it feels like my phone vibrating on the steering wheel, but if i touch the gas or start going straight again it goes away. also as everyone knows these trucks just looooove to wander the road so when i correct the wander it only sometimes makes this feeling. checked the fluid on the ps pump its fine, strange part is if im at a dead stop turn the wheel no vibrations/my thinking is power steering pump going bad? but whenever ive had a ps go bad a)makes noise all the time under load or not B) usually eats fluid Whatya guys think?

 

wheel bearing