gchu69

Ok thanks.

Did it happen to come and go? It stopped completely for a few days but started up again just today.

Thanks. Had a "clunk" free day yesterday so hopefully it's gone.

Appreciate it. Saw this online but wasn't sure if anyone had success with it.

Yes the 8 speed.

500 miles into 2019 SLT and started experiencing a clunking when coming to a stop. Doing some research, sounds like a harsh 3-1 downshift has been an ongoing issue with GM trucks. Took it to dealer and rep experienced it as well during a test drive. All tests and diagnostics came back normal and they told me it's the transmission adaptive function learning. Not buying this at all. Anyone experience this?