Flash: 5.7L Powertrain Diagnostic And System Enhancements
This bulletin involves reprogramming the Powertrain Control Module (PCM) with updated
software.
During normal diagnostics a technician may find Diagnostic Trouble Code (DTC) U0140 -
Lost Communication With Body Control Module (BCM) and when attempting to clear from
the PCM with a Scan Tool (wiTECH) will be unsuccessful to do so.
