Truck just died on side of Interstate. Pulled codes off dash......DTC P1694: NO BUS MESSAGES RECEIVEDFROM COMPANION MODULE. PDC plug seems to be ok. Faulty ECM ? What else could it be?
Not worth it.
17 years later I'm on the same ECM. You would have to send that spare in and have it reflashed with your software. There is 52 different version of software per year.
Truck just died on side of Interstate. Pulled codes off dash......DTC P1694: NO BUS MESSAGES RECEIVED FROM COMPANION MODULE. PDC plug seems to be ok. Faulty ECM ? What else could it be?
Edited by winch_warrior