Hello, I hope someone can help me out with this.

I just put on sidebars that attach via the body bolts on each side. I tightened them to about 50 lbs of torque after installing the side railing and had no issues until today. It rained last night and I am not sure if that has anything to do with it. However, every bump I hit on the road creates a creaking noise inside the cabin. To my knowledge it sounds like it is just the front bolts that are creating the creaking noise (found by bouncing the side rails in different locations). Just wondering how I should go about fixing the creaking.

Thank you for the help!
Nick

This is on the 2011 Silverado?

Have you discussed with the manufacturer of the aftermarket parts?