Ianscape

My 2020 1500 with the 3.0 just started experiencing this. NB on I93 today when at 70 there was a loud slam in the transmission and felt like the brakes locked up....right on the 2 lane merge in Franconia Notch too. Truck had been in for a slamming sound the week prior that the dealership could not replicate and said to drive as normal. Back off to em, and thanks for the posts on the bulletin, I'll have em look at it!