I took my Ascent (21k miles, 5/2018 build date, 12/2018 purchase date) into the dealer last month for wildly surging RPMs on hills on the highway, rough "shifts" under moderate acceleration (vibration / feels like driving over a garden hose), and lurching "shifts" under light acceleration (feels like bad manual clutch technique).
They found something on day 1, kept it for 6 days, then backpedaled and said there is nothing wrong. I took this video on the way home -- it still feels very wrong to me.
The new recall is very short on details, but I'm thinking that "CVT chain slip" sounds very much like what I'm seeing. Thoughts?