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Service bulletin C1904A

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10117351
Published by NHTSA2017-09-14
Manufacturer's numberC1904A
Manufacturer's date2017-06-30
NHTSA componentENGINE; ELECTRICAL SYSTEM

NHTSA's summary

This Campaign is being issued to authorize certified repair locations to re-calibrate the ECM on certain 2017 L9 CM2350 engines.

The document

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, Engine

Vehicles listed
CUMMINS L9

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