Just bought a new 2019 Silverado with the 10 speed tranny.now with 250 miles on it, the transmission is “bumping” when at a low speed downshift. Did not do this at test drive. Headed to dealer to see what they say. I have read about the issues here and looks like GM still has problems. And if Anthony j, social media for GM is still here, stop posting feel good statements and get on the tranny engineers and get the issue fixed!