Silvernadont

My 2014 1500 Silverado LTZ (sticker over 48k) is having a vibration issue as well. Starts at around 45mph and gets worse at higher speeds especially after 65mph. I have had it to 2 different dealers a total of 3 times and no resolve. They have road forced balanced and told me all checks out fine but still vibration. I am considering using the Lemon Law. I have seen posts stating to take in and have the tires true balanced and have an independent shop check the balance of the drive shaft but at my cost. I really don't feel there should be any cost to me on an issue that GM has to be aware of with the number of people posting here. I am waiting to see if anyone ever comes out with a positive result from their visits to the dealer. Very disappointed.