Bart961

Thanks for all the information, however it's not just a "hard shift" it's a slam/jerk and you can hear the transmission slamming gears, not just feel it. That's normal?

Hey all, new owner to a gorgeous looking truck! I honestly love everything about it... Except how it drives... 900 miles on it and it shifts like garbage. Coming to a stop at a stop sign or light get a big clank and jerk. Happens 65% of the time, especially after warmed up. Also has a 25-30% chance of hard up shift when accelerating with a similar jerk. RPMs rev up then shifts with a jerk. Went to dealer and explained issue. Waited almost 2 hours for them to take a 10 minute test drive down the road for them to come back and tell me they couldn't reproduce the problem. Upon questioning the test driver, he explained to me that there was too much transmission fluid (overfilled) and also said there was air pockets in the transmission.... Yea... Ok He also told me he never drove the new 8 speed tranny silverados so he's not sure how the shift should feel, I told him well it definitely should not slam gears or jerk. He said he drained some fluid and released the "air bubbles" so it should be all set and if I have any more issues to bring it back. Drove it home, it happened every time I came to a stop. I'm afraid of the incompetence of the mechanics at this dealer; to try to tell me it's "overfilled and has air bubbles" as to the leading cause of slamming shifts... It's a brand new truck has 900 miles on it, bought it a month ago. I see plenty of people having issues on their 15-16s with this issue and wonder has anyone had any type of resolution? Why is my brand new $60k truck already in need for transmission service? Owned a 97 C2500 and a 00 K3500 and never had an issue with transmission even with almost 200k miles on each of them. Please help! Thank you!