Things You'll Need
Instructions
Remove the GameCube controller from the GameCube system.
Turn the controller over. Unscrew the screws on the back of the controller with the Phillips screwdriver. Pull the back plate off slowly so you do not damage the controller's electronic components.
Remove the circuit board from inside the controller.
Push the small, yellow joystick button out of the controller.
Slide a gray joystick button into the yellow joystick button's place. Slide the circuit board into place.
Lay the controller's back plate in position. Screw all the screws back into their holes. Replug the controller into the GameCube to play a game.