I had a vibration and noise problem on my 2019 High Country . It would happen every once in a while . The sound and vibration was really annoying me . I was ready to take it back to the dealer to get checked out . I finally narrowed it down to me getting a full tank of gas . Every time I put in a full tank of gas the vibration and noise would return . When my gas tank got down to half the vibration and noise would stop . After I put over 2000 miles on the Traverse all vibration and noise went away completely . Now all I hear is the sweet sound of the exhaust when my lead foot kicks in .