Access new communication protocols of CANFD (cover for GM 2021-2024). ECM (Engine System) Diagnose:You can diagnose the engine system via ecu obd2 port, support all 10 OBDII test modes, such as live data, O2 sensor test, component test and more;read and clear the engine error codes, find out the exactly problem, repair it, and turn off the MIL engine light.
