Service bulletin 18-001-14

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

NHTSA's summary

Flash: Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find that the following Diagnostic Trouble Code (DTC) has been set: ? P0456 - Evap System Small Leak In addition, the following software enhancements are available for D2, DJ, and DD vehicles equipped with a 5.7L engine (sales code EZC) ? Transmission torque management enhancement when shifting from drive to reverse. ? Additional powertrain enhancements to the intake manifold Short Runner Valve (SRV) system. ? Additional powertrain enhancements for block heater applications (sales code NHK).

The document

• NHTSA's copy of the document (PDF)
• If that address does not open, try this one

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Lighting, Transmission and driveline

Trouble codes named

P0456

Listing a model year does not mean every vehicle of it is concerned: the document says which.

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

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