I'm also a victim of the dreaded vibration, just as most others describe, 2014 SLT double cab, 20" wheels, 3.42. Dealer first tried the balancing act, replaced one tire, no change in vibration. Never a fan of Continental tires anyway (had tor replace all 4 continentals on a 2009), I went ahead and had four new Michelins installed - still no change in vibration. My truck has been at the dealership since this past Friday, an GM guy was supposed to take a look at it - I got a call today that they are replacing the entire rear end, something about a drilling error in manufacturing allowing the axles to float from side to side and that is what causes the vibration and why it is intermittent - we shall see.......
I'm also a victim of the dreaded vibration, just as most others describe, 2014 SLT double cab, 20" wheels, 3.42. Dealer first tried the balancing act, replaced one tire, no change in vibration. Never a fan of Continental tires anyway (had tor replace all 4 continentals on a 2009), I went ahead and had four new Michelins installed - still no change in vibration. My truck has been at the dealership since this past Friday, an GM guy was supposed to take a look at it - I got a call today that they are replacing the entire rear end, something about a drilling error in manufacturing allowing the axles to float from side to side and that is what causes the vibration and why it is intermittent - we shall see.......