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Service bulletin C1984

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 id10129847
Published by NHTSA2018-03-12
Manufacturer's numberC1984
Manufacturer's date2018-02-09
NHTSA componentELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

This Campaign authorizes certified repair locations to re-calibrate the ECM on certain ISL9 CM2350 MY 2015-2016 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, Software

Vehicles listed
CUMMINS ISL 9

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