Ok this issue is well documented and there is an applicable TSB (11-7-10). Does anyone here have experience with this issue or it's resolution? I will say that I do not notice any consistent pattern of occurrence except for that it seems to occur the first or second shift after engine start. I almost want to say at light throttle as well. My build date is 10/10 so if I read the TSB correctly it requires the replacement of three solenoids and a reflash of the transmission control unit. What is different about the solenoids (faster cycle time etc..). Is the issue dependent on the transmission fluid temperature(it would seem so).