Hello everyone! I've got a 2013 DCLB I picked up in November. Spent a lot of time on here researching before buying, found a lot of information so thank you for that.
The truck developed the 2nd gear vibration not long after buying it and after tranny mount, leaf spring TSB, and steering damper no joy.
I will say the dealership (Balise Toyota in Springfield, MA) has been awesome. They told me straight up when the leaf springs didn't make it better and asked to keep it to do the damper. Next step is a field tech. Just hope this is over soon so I can do my lift.