Hey Everybody, I'm sure this is answered somewhere else so if someone could help me out or point me in the right direction that would be great. I have a '01 Silverado Z71 that in the past week has started acting up. At slow speeds when I turn to the left (and only to the left) I hear a groaning sound coming from behind the steering wheel and if feels as though my power steering gets really week (it takes effort on my part to turn the wheel while it's doing this). At higher speeds I don't notice it at all. The truck seems to drive straight and doesn't wander at all. I'm thinking the steering gear box is going but wanted to see what you all thought before the drop the $$$. Thanks!