Rattle 2021 Trail Boss

[Trailrunner]

My 2021 Trail Boss LT has developed a rattle from the undercarriage. I have noticed it around 1500 RPM while coasting. The truck is equipped with a cat back exhaust (adaptive valve is gone.) I have been under the vehicle and did not find any issues with heat shields, drive shaft, or any other components. Anybody else experience this?

 

[Vegas17]

As wierd as it maybe..my O2 sensors came loose and were rattling around in the exhaust. Never touched them before so not sure how they just came loose overtime.

 

[2KWIK2C]

I removed all the empty beer cans and the problem resolved itself!

 

[SpartanSTB]

It’s the underbody skid shield that is held on by four 13mm bolts. I have tightened the bolts as much as I can which does help but at certain rpm I can still hear it but not as loud. I am currently looking for a better solution.

 

[Stormin08]

see you other post, make a slight bend in the edge of the heat shield.