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Service bulletin WC-C0964

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 id10033425
Published by NHTSA2010-08-18
Manufacturer's numberWC-C0964
Manufacturer's date2009-12-11
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

CUMMINS: CAMPAIGN IS BEING ISSUED TO ALLOW FIELD TO INSPECT INTAKE AIR PASSAGE OF SPECIFIC ISX CYLINDER HEADS TO DETERMINE IF MACHINING CHIPS ARE PRESENT IN THE INTAKE AIR PASSAGE. IF MACHINING CHIPS ARE IDENTIFIED, THE FIELD IS AUTHORIZED TO REPLACE THE CYLINDER HEAD AND CHECK FOR ACTIVE FAULT CODES 2387 AND/OR 2449 WITH THE USE OF INSITE. ENGINES ISX, QSX15ISX15. NO MODEL YEARS LISTED. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine

Vehicles listed
CUMMINS CUMMINS
CUMMINS ISX

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