JEEP

18-009-20

2020-02-06 · NHTSA 10173350

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer summary

Original wording in English

Flash: Powertrain Control Module (PCM) and Transmission Control Module (TCM) Updates This is a coordinated bulletin that involves reprogramming the PCM and TCM,at the same time, with the latest available software.Both the PCM and TCM must be up to date for these changes to be effective. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DiagnosticTrouble Code (DTC):P0456 - EVAP System Small Leak. Customers may also experience the following:Extended engine crank times. The following improvement is also included:Transmission coast-down shift quality improvements.

Repeated filings are grouped only when make, bulletin number, publication date and complete summary agree. Original record numbers are retained. Older publications remain available, and an explicit later version is shown when established. Pre-1994 vehicle associations are separated from default results; an unspecified year does not mean all model years apply.