Gldjerkbait

Any updates with the vibration issue with the 2500hd.gas job with factory 20"wheels.been to the dealer twice.service manager admitted could feel something but gave me the BS line.vibrstion was there from day one,truck now has 3900 miles.It's not the tires I've changed them. Still using factory wheels.vibration starts at 40mph dosnt go away if you shift into another gear or into neutral.thanks for any help