I agree, go with a "wet bolt" (shackle bolts) upgrade kit. The OEM shackle bolts use a thin wall plastic bushing, when that starts to wear then one experiences a metal-to-metal condition...., and the shackles start to deteriorate (bolt clearance hole through the shackle elongates).
A wet bolt upgrade comes with bronze bushings, plus now you can grease them. Also, the kits come with a heavier duty shackle as well.
I installed a wet bolt kit in my TT a number of years ago, no noise and no wear to-date.
Bob
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2016 GM 2500HD 6.0L/4.10
2018 Jay Flight 24RBS
2002 GM 2500HD 6.0L/4:10 (retired)
2005 Jayco Eagle 278FBS (retired)
1999 Jayco Eagle 246FB (retired)
Reese HP Dual Cam (Strait-Line)