If the M1120 transmission range selector flashes the current gear selection while operating, what action should the operator take?

Answer: C — Perform transmission fault emergency procedures

When the M1120 transmission range selector flashes the current gear selection while the vehicle is operating, it is indicative of a potential issue or fault within the transmission system. The appropriate action for the operator to take in this situation is to perform transmission fault emergency procedures. This typically involves assessing the transmission for any malfunctions, ensuring that the vehicle is operating safely, and taking steps to mitigate any damage or operational hazards. Engaging the parking brake, checking the fuel level, or increasing engine RPM does not directly address the underlying issue suggested by the flashing gear selection indicator. Instead, focusing on transmission diagnostics and adhering to emergency procedures ensures that potential problems are managed effectively, thereby maintaining vehicle reliability and safety. This proactive approach can help prevent further issues or potential breakdowns related to the transmission while in operation.