My 2017 Chevy Silverado had 83,000 miles when I had to replace transmission.  Since purchasing new the transmission has always jerked and shifted funny.  I know several others who have had the same issue, there is a known issue with the transmission but GM will do nothing about them.  

since having transmission replaced the new one is starting to jerk and shift hard just like original one did.  They are junk and GM knows it