Serge Messier

I am not a salesman. I am an idiot like everybody else that had a vibration and have been reading these forums and watched a bunch of videos. I tried a few things with no success and found a solution that works for my truck. I did try COR's thing about driving in M5 but the vibration wasn't as bad but the transmission shifting was not pleasant. Just like the other 832 pages of this thread, take the info you want but don't send out bad vibes you troll.

SOLVED FOR ME: I have a 2014 Silverado 5.3L LTZ and I have the stupid shake issue like so many of you. Oddly enough, I also have weird shifting like clonks which the US class action lawsuit only mentions 8 speeds when i have a 6. I road forced balanced the wheels\Tires and I have 3 sets of wheels so I know the vibration was not caused by one set. I tried tightening the leaf springs and it reduced the vibration but made the ride stiffer at lower speed. The solution for me was adding a AFM disabler from Range technology. The vibration is gone and the transmission shifting is now smooth. It's only been one day and I am so happy, that I wanted to share. I do love the GMC Sierra AT4 with a 10sp but don't need the 6.2L so the rumors that 2020 Sierra\Silverado 5.3L will come with the 10sp is great.