18-086-15

Flash: Powertrain System Improvements/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 or a less than desired powertrain response when operating their vehicles in high ambient temperatures. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Code (DTCs) in the PCM: ? U0140 - Lost Communication With Body Control Module (BCM) (LD, LX Vehicles only). ? P0606 - Internal Control Processor. The following powertrain system improvements/enhancements are included in this software release: ? Corrected a generic scan tool display issue regarding Mode 6 data accuracy.