Getting sick of this "shimmy" at 65+

[sootie]

60-65 cruising.

my 2010 does it (two piece drive shaft) but my 08 did not (one piece drive shaft)

one thing i noticed is when i lifted my truck, the shimmy occurs at a lower speed 50-55

 

[RedRice589]

I don't have a shimmy on mine luckily. Still interested to see what comes up.