There are just a whole lot of variables when it comes to these electronically controlled transmissions of what fails on them.
Here's one:
http://forum.gopowerhungry.com/2004-...-issues-4.html
Read the last page for his fix to the problem.
That's why I made it a sticky.
If anything I'd recomend doing a valve body upgrade. That's what I'm thinking about doing in February before my tranny decides to take a dump!