If the AutoCal's programming process is interrupted (due to vehicle power loss, low battery, etc.), it may result in a corrupted PCM. To prevent this, ensure that the vehicle is connected to a battery charger that provides at least 10 amps of continuous power during programming. After confirming this, try flashing the vehicle again. If a VIN error appears during the process, the vehicle will need to be restored to its stock settings before continuing. Please note, we do not provide stock tune files; this step must be performed at a dealership.