An information display system for a vehicle includes an interior rearview mirror assembly disposed at the interior cabin of a vehicle and a video display screen disposed in the interior rearview mirror assembly. The video display screen is operable to display video images captured by a backup camera of the equipped vehicle for assisting the driver during a reversing maneuver. A transmitter is disposed at the interior rearview mirror assembly, and a graphical user interface generates instructions for operation of the transmitter. The video display screen is operable to selectively display video images captured by the backup camera and instructions from the graphical user interface. When the equipped vehicle is executing a reversing maneuver, the information display system displays the video images captured by the backup camera. The graphical user interface interactively operates with the user input for display of instructions for operation of the transmitter.