2018 Camaro 1SS A8 Shudder

Hey guys - I wanted to let you know my results from the shudder I was having. At 15k miles I noticed significant shudder. I recorded it on my phone for the dealer to see and you could easily see the RPM jump up and down and see the video shake as it shuddered. The dealer couldn't deny that. Not that they tried to, I just didn't want to play games with them. They took the car for 2 days and called me back saying it was ready. Wow, what a difference! It is rock solid now and after 3000 miles it's still great. It shifts smooth but tight with no shudder in any gear. They replaced the old fluid with a new synthetic trans fluid as stated in the TSB, flushing it three times. If you're having any shudder, give this a try. I am very happy now - knock on wood.