The truck has vibration starting around 70mph.
Over the past few years, it has come and gone; it isn’t consistent, meaning you will feel it, and then it will smooth out.
Mostly feel it for it your butt; however, sometimes it will be in the steering wheel.
It's almost as if a wheel is unbalanced.
Most driving is 65mph and less, so you don’t notice it.
I am searching for some suggestions on what to check for.
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