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Service bulletin 0402

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 id10006207
Published by NHTSA2004-04-26
Manufacturer's number0402
Manufacturer's date2004-01-14
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

ON SOME APPLICATIONS THE FAN CLUTCH RELAY AND/OR THE DIODE IN THE EC-450 FAN CLUTCH MAY FAIL AND CAUSE THE FAN CLUTCH NOT TO COME ON. INTERNATIONAL TRUCK MODEL 1552, 1652, 3800, RE BUS, 4300, 4400, 4700, 4800, AND 4900. MODEL YEAR UNKNOWN. *TT

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
UNKNOWN UNKNOWN1

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