I have also tried to program the locks on my 2010GT without success. I get the beep, but after pressing the unlock button for whichever function, nothing changes. It's not that big of a deal for me although I would like to have the auto lock function available if needed. I've tried it fast, slow, turned the key off after the presses, started the car after the presses, and everything in between. What am I doing wrong?
Just remember to wait for the conformation chimes after you are done hitting the unlock button to the desired function code before you start the car.