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Service bulletin TB-C0920

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 id10030447
Published by NHTSA2009-10-06
Manufacturer's numberTB-C0920
Manufacturer's date2009-06-05
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

CUMMINS: ISX CM871 ECM WATER INTRUSION RTV SEALANT. THIS CAMPAIGN IS BEING ISSUED TO ADDRESS ISX CM871 ELECTRONIC CONTROL MODULES (ECM) THAT WERE SHIPPED WITH A MIS APPLIED RTV SEALING BEAD, ALLOWING MOISTURE TO ENTER THE INTERNAL PORTION OF THE MODULE. MODELS ISX, QSX15. 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 ISX
CUMMINS ISX CM871
CUMMINS QSX15

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