Peterbilt 579 2024 Transmission Fault Nf. This fault usually has to do with dirty connections on the starter enable relay. The transmission control module (tcm) receives the vehicle’s hill holder mode message from a vehicle electronic control unit (ecu) over the primary data link (j1939a).

The transmission and drivetrain are crucial components of the peterbilt model 579, responsible for transferring power from the engine to the wheels. Peterbilt model 579 is the most advanced peterbilt truck ever, with an unmatched combination of power and efficiency, advanced technologies and luxurious driver comfort.