Any Vibration Issues 2019/2020?

[DH Denali]

@Imentzel:  Thanks!  Is this the service bulletin you are referring to?

GM Service Bulletin 20-NA-142 Shudder Surging While Driving.pdf

[lmentzel]

@Imentzel:  Thanks!  Is this the service bulletin you are referring to?
GM Service Bulletin 20-NA-142 Shudder Surging While Driving.pdf

This is what I took to dealer.. They were not aware of it, then researched it more and their version included up through 2018.

[DH Denali]

I put my truck into the shop at the local GMC dealership on Monday.  When I told the Service Rep the problem, he replied "You mean like a tire vibration?"  So I was very skeptical about getting the problem solved.  They did say it could be the torque converter and suggested a "Fluid Exchange" on the tranny/torque converter.  Servicing was covered by the warranty, so no cost to me.  I did a 500 mile road trip on Tuesday and it seemed to be cured and I like my truck again.