[b3lha]

Just in case there is any confusion, below is an accurate description of what the Manual Button does. It has no effect on TC lockup and it does not do anything when cruise control is set. The transmission has a separate set of shift maps for cruise control.

Originally Posted by b3lha

Now for yet another answer to the FAQ "What does the manual button do?". Below are the maps for Manual Mode with the Stick in 3. You can see that the car will start in 2nd but then upshift to 3rd almost immediately and then hold 3rd right up to 143mph. On the downshift, it will hold 3rd all the way down to almost a standstill. When the stick in is 2 (not on this diagram), the car will start in 2 and hold it right up to 91mph. Essentially, Manual mode does its very best to keep you in the gear you have selected on the shifter.