I have a Pontiac GTO 2005 LS2 with E40 ECU. Throttle pedal and throttle body all work fine until the Throttle body position reaches 83%....Then the throttle body shuts down and throws DTC code P2101 "Control Module Throttle Actuator Position Performance". With no responce to the padal imput at all. As if the whole pedal and throttle body are dead. Checked the usual stuff like fuses, plugs and wiring etc with no shorts or open ccts. If I clear the Code and turn the ignition off and on again and then it all works fine again until I hit 83% then it all shuts down and throws the same code.... Does anyone have any ideas as to what this might be or how to carry out further testing? I dont just want to buy new components just for the sake of it.