Noisy turns.

[Yourmomsbediscomfy]

I own a 2015 Chevy Silverado 1500 4x4. I have had it just over a year and a few months back a pop started while driving slow with slow turns. I checked ball joints tie rods Etc. didn’t fine nothing wrong so I stopped worrying about it. Just the other day I noticed while in park and turning the wheel back and forth a rubber on rubber sound started along with a light squeaking noise. I can also hear a clicking as I turn the wheel also. I crawled under it while someone was turning the wheel and can’t really tell where the noise is coming from but sounds like it’s coming from my right inner tie rod or maybe even rack an pinion. Any help or input would be awesome hopefully someone has had this same issue and diagnosed and fixed it and can shine some light on the issue. Thanks in advance. Also the truck has a leaven kit. Not sure if that would cause any issues or not. 3 in the front 2 in the back. 

[newdude]

Check the rack mounting bushings.  

[Yourmomsbediscomfy]

I was also wondering if there are any kind of lube inside the rack. I have what looks like a small leak of something on my oil cooler lines. Maybe lost oil inside my rack? Not sure how to check that either. Or if there’s even any in there.