Powertrain System Improvements/Enhancements
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software.
The customer may describe hearing the fuel pump relay cycling during remote start or a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) set in the PCM:
? U0140 - Lost Communication With Body Control Module (BCM).
? P06DD - Engine Oil Pressure Control Circuit Stuck Off.
? P0522 - Engine Oil Pressure Sensor Circuit Low.
? P0108 - Manifold Absolute Pressure Sensor Circuit High.
? P1239 - Engine Oil Temperature Too Low.
? P0298 - Engine Oil Temperature Too High.
