Flash: PCM Software Enhancements
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software.
A small number of customers may experience 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 Powertrain Control Module (PCM):
? U0140 - Lost Communication With Body Control Module.
? U0401 - Implausible Data Received From ECM/PCM.
? P0441 - Evap Purge System Performance.
? P0340 - Camshaft Position Sensor Circuit - Bank 1 Sensor 1.
This software update also has improvements for fuel pump relay cycling during remote starts.