What are these

[pizza_pablo]

And what do they do?
Only on passenger side. Outside the frame rail about the center of the front door.
They feel like stone or cement.

 

[vincentw56]

And what do they do?
Only on passenger side. Outside the frame rail about the center of the front door.
They feel like stone or cement.

Vibration dampers. They try to keep the vibrations down when the truck is in MDS mode.

 

[CHeYeNNe71]

 

[pizza_pablo]

Cool. Thanks!
Crazy that they are just on one side, unless they're in a different location on the port side

 

[Granite Goat]

Those are typically added as a last resort when the an unexpected harmonic vibration is discovered in testing after all production tooling to build the vehicle has been put in place (too late to make design changes).

 

[pizza_pablo]

Those are typically added as a last resort when the an unexpected harmonic vibration is discovered in testing after all production tooling to build the vehicle has been put in place (too late to make design changes).

Oh boy...
Well, I guess they are working.