Flash: Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain...

Bulletin number

18-056-16

Component

Engine

Summary

Flash: 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. These symptoms are broken down by vehicle: 2015 WK 3.0L engine (Sales Code EHD) · P0456 - EVAP System Small Leak. · Enhancements to remote engine start. 2015 WK 5.7L engine (Sales Code EZH) · P0456 - EVAP System Small Leak. · U0140-00 - Lost Communication with Body Control Module (BCM). · Enhancements to improve a slight lag or hesitation during Multi Displacement System (MDS) mode transitions. · Enhancements to improve a slight drop in engine RPM when the vehicle is shifted to reverse or drive within 3 seconds of a cold start. 2014 WD 5.7L engine (Sales Code EZH) · Enhancements to improve a slight drop in engine RPM when the vehicle is shifted to reverse or drive within 3 seconds of a cold start. 2015 WD 5.7L engine (Sales Code EZH) · P0456 - EVAP System Small Leak. · Enhancements to remote engine start.

Owners of these vehicles have filed 337 complaints in the engine category.