Raise the truck and have some one rock the steering wheel back and forth while you look for excessive movement at the idler arm - also check is the input shaft on the steering gear box rotating more than the output(pitman arm side) i've seen more steering box failure in the last several years especially true with big tires or boggy road driving, a rebuilt box can be bought at a local parts store- o'reillys, advance, napa etc.
There are several components that could cause noise from the front when turning. The components to be concerned about are, Wheel bearings, Ball Joints, Tie rod Ends, CV joints and brake rotors.
Wheel Barrings:
Jack the car up under the control arm until the wheel is off the ground about 3 inches. Slide a pry bar under the tire and place the other hand on the top of the tire. As you lift and lower the pry bar fell for loose movement in the tire. If there is such movement you have a bad wheel bearing.
On your vehicle this is a sealed Hub.
Ball Joint:
Repeat the test above and watch the upper and lower ball joints for movement. Is there is movement replace the bad ball joint.
Tie Rod ends:
You have changed the inner and outer tie rod ends so you are probably covered there.
CV joint:
The Joint is housed in a rubber boot. If you can feel the joint inside the boot you can turn the tire forward and back and feel for play in the joint. If you are not able to feel the play you can loosen the clamp on the boot and push the boot out of the way. Then repeat the test.
Brake Rotors.
You have already changed the rotors so this is not likely the issue.
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