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Service bulletin C0539C

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 id10084601
Published by NHTSA2016-11-22
Manufacturer's numberC0539C
Manufacturer's date2014-05-02
NHTSA componentENGINE; FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP

NHTSA's summary

THIS CAMPAIGN AUTHORIZES FIELD REPAIR LOCATIONS TO REPLACE THE FUEL LIFT PUMP AND RECALIBRATE THE ELECTRONIC CONTROL MODULE (ECM) ON CERTAIN ENGINES IN SCHOOL BUS, TRANSIT BUS AND EMERGENCY VEHICLE APPLICATIONS. THIS CAMPAIGN IS BEING RELEASED TO ADDRESS A FUEL LIFT PUMP ISSUE THAT COULD RESULT IN UNEXPECTED CUSTOMER DOWNTIME.

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, Fuel system, Fuel pump

Vehicles listed
CUMMINS ISB5.9 G

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