Flash: 3.6L Powertrain Diagnostic and System Improvements
This bulletin involves selectively erasing and reprogramming the Powertrain Control
Module (PCM) with new software.
A small number of customers may experience the following symptom or conditions or a
Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician
may find that the following Diagnostic Trouble Code:
? U0140 - Lost Communication With Body Control Module (BCM).
? Garage shift engagements into D may be harsh at times after shutdowns of 10-30 minute duration.
? Harsh upshifts generated by backing out of the accelerator pedal.
? Harsh shifts can be felt after acceleration/deceleration driving maneuvers from a stop.
? P0606 - Internal Control Processor.
? Accuracy improvements for the Automatic Oil Change Indicator (AOCI) system.
