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Service bulletin C-09T5-1

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 id10027684
Published by NHTSA2009-01-31
Manufacturer's numberC-09T5-1
Manufacturer's date2009-01-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:DIESEL

NHTSA's summary

REVISED LIFT/PRIMING PUMP. ENGINE MODELS SIGNATURE, ISX, QSX15. VEHICLE MODEL AND MODEL YEARS UNKNOWN. *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 QSX15
CUMMINS SIGNATURE

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