GODIAG GT100 OBDII Protocol Detector OBD2 Breakout Box E-C-U Connector. What is GODIAG GT100?. Highlights for Godiag GT100 GODIAG GT100 Functions in Detail. - By connecting the vehicle and diagnostic tool via OBDII, Godiag GT100's LED will indicate whether the OBDII diagnostic interface has a good communication with the car.
