DTC U0553: Invalid Data Received from Lighting Control Module-Rear "B": Description

The PSCM monitors the HS-CAN messages when the ignition has been on for more than 5 seconds, the voltage to the PSCM is greater than 6.5 volts and there are no DTCs present inhibiting PSCM operation.

• DTC U0553:00 (Invalid Data Received from Lighting Control Module-Rear "B": No Sub Type Information) - This DTC sets if the PSCM receives a value of "unchanged data", "faulty", or "no data exists" in the trailer back up assist message from the RLCM-B.