Continual Vibration at 100KMH on cruise

[Madjack]

When driving my 2009 Montana on the hiway using cruise there is a surge or vibration that feels like the engine wants to jump out from under the hood. Have had this vehicle back to dealership many times and they feel the vibration but can't find the cause. I was told to keep driving until it got worse then they might be able to find the cause.
Has anyone else had or heard of this problem or a fix

 

[GM Customer Service]

Hi Madjack,

I'm sorry to hear of this concern with your vehicle. I understand that you have been back and forward to the dealership and how inconvenient this can be. I cannot guarantee anything, but we will be glad to look further into this concern for you. Please send us a private message referencing this thread if we can be of any assistance. Thank you.

Kristen A. (Assisting)
GM Customer Care