I see this is dated a couple years ago but I noticed that my 4l65e is saying that the Tcc is applied at 8 mph at 1400 rpm in first gear and stays locked all the way through all gear changes up and down until I get down to 6 mph then it shuts off. Regardless of the settings and even if I push the brakes as well as shift manually nothing seems to make a difference. Has anyone else had this issue?