Truck Making Metallic Noises When Turning the Steering Wheel?

These past few weeks my truck started to occasionally make “old” metallic noises while turning. The truck doesn’t have to be rolling. While idling, I can turn left or right and hear this noise. I’ve never had this problem before. I’m starting to think a bolt is loose or piece of metal cracked.

On a second thought, maybe something is making metal-to-metal contact. I grease my truck, and they grease it again on every oil change.

 

Creaking. It’s on a 2014 Freightliner Cascadia DD15.

 

What’s strange is that it never made any sounds while turning the steering wheel. Now it’s common to hear that while backing up and steering.

 

What I need to do is find out where exactly the noise is coming from. I’ll probably ask a random driver at the truck stop to turn the wheel.

 

UPDATE—

My truck stopped making noises a few weeks after I initially posted the problem. I think part of the problem was that my truck had been sitting for almost two weeks. If I remember correctly, greasing my truck chassis along with the power steering solved it. I grease my truck every 10-20k miles.