The anti-sway bar is a long bent rod that is attached to the frame (in rubber bushings) in the center and at each end is attached to the lower control arm (near the tire). The ends have rubber bushing mounts and take a great deal of wear and tear.

However, if you jacked up the truck and hear the noise while turning the wheel, the problem probably isn't in the anti-sway bar because it isn't moving. The problem is in one of the steering joints and could be in more than one.

Start at the steering box and follow the connections. Don't try to start at the end or the middle - start from the beginning and carefully watch each joint in order to find the slack.

If you still can't find it, set the truck back on the floor and try that way - sometimes it helps the snooping to have more resistance on the steering components.

Frank