Flash: Compressed Natural Gas (CNG) Powertrain Diagnostic And System Improvements
This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software.
The following powertrain system improvements/enhancements are included in this software release.
Software to prevent Malfunction Indicator Lamp (MIL) illumination with no defect found for Diagnostic Trouble Code (DTC) P0481 - Cooling Fan 2 Control Circuit/Open setting in the PCM.
Harsh shift improvement when shifting from drive to reverse.
