Hold light is flashing on the board

Dear Friends..

Now a days my Aveo car hold light is flashing when i driving my car..that time if i park and stop the engine of my car, the flashing light will escape..anybody help me why its happening..if the hold light flashing, the gear transmission is not in proper way..

is the check engine light flashing as well?

most typical hold light issue we've had is the coilpack arcing and the rpm signal to the transmission being lost.