Wow, that really really bites. Thanks for posting and letting us know. If you don't mind, when did you purchase it and what is the build date (in the driver's door post)? I'll add it to the list and I'll add a column for an ECM update, maybe that had something to do with it. Hope they treat you right.Well I'm not 16k miles on my 2020 xline. At the 15k mile service there was a ECM update and now 1k miles later my trans is acting up. I'm dropping it off tomorrow. I'm gonna make a video of the tach so I can show them what it's doing. So they cant say unable to duplicate. I'll update after I hear back from them.