Mine still will not shift at wot sometimes but it's only maybe once a month if that . . . certainly not something I'm going to complain about as it simply hits the limiter a couple times and then will eventually shift. My initial problem was it wouldn't shift at all until I let off the gas.
They also replaced the vehicle speed sensor too, so the initial shift problem could have been fixed by that or the reflash of the pcm I think.
As for a code I believe its DTC C0236 - dealer gave me a copy service doc #PIC3975A which has info relating to this issue.
