Air is present in the system.

1. Add power steering fluid to the power steering reservoir. Refer to Checking and Adding Power Steering Fluid
2. Bleed the system. Refer to Power Steering System Bleeding .
3. Inspect the hose connectors for proper torque.

The steering gear mounting is loose.

Tighten the attaching bolts to the specified torque. Refer to Fastener Tightening Specifications .

The steering linkage joints are worn.

Replace any loose parts.

The steering gear is improperly adjusted.

Adjust the steering gear to specifications.

Worn or maladjusted front wheel bearings

Adjust or replace the bearings

Worn or damaged steering gear

Replace the steering gear. Refer to Steering Gear Replacement