I would like to thank this forum for saving me $33,xxx + on a 2014 Silverado.
I read this last night, stumbled upon the forum by accident.
I was going into the dealer to buy the truck today.
I test drove a 2014 Silverado LTZ, accelerated it up to 76 mph and sure shit...the vibration was there.
I asked the dealer who was riding with me if he could see my hands vibrating on the steering wheel and he could.
I drove a 2016 of the exact same model and no vibration...so again, thank you very much! If they can find one for me I will be buying one this week. Yes, this is my first post. Thank you, again!!!