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Service bulletins for the 2015 International Workstar

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.

254 on file from NHTSA, as of 2026-10-19.

By type

By component

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
IK15000802017-08-16. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT:ELECTRICAL. Updated Snow Valve Motor and Harness Installation Procedure
IK08005172017-08-16. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Cummins ISB Engine Remote Engine Speed Control with Feature 12XAT
IK08002242017-08-16. Service bulletin. EQUIPMENT:ELECTRICAL; ENGINE. Power Distribution Center (PDC) Replacement
IK12000292017-02-06. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. RADIATOR INTERNAL RESTRICTION AND FLUSH PROCEDURE
MIN141212016-11-07. Service bulletin. ENGINE; ELECTRICAL SYSTEM. VEHICLES EQUIPPED WITH A BATTERY DISCONNECT SWITCH MIGHT ENCOUNTER AN ISSUE WHERE THE DIESEL EXHAUST FLUID (DEF) FREEZES INSIDE THE PURGE PUMP DUE TO THE AFTERTREATMENT CONTROL MODULE (ACM) NOT RECEIVING BATTERY POWER
IK-12013202016-09-13. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE. IK1201320 - EGR SLOW RESPONSE DIAGNOSTICS; 2659 - 10
IK-12012532016-09-12. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. IK1201253 - EXHAUST MANIFOLD SERVICE PROCEDURES
IK-12009152016-09-12. Service bulletin. ENGINE. MISFIRE DIAGNOSTICS IBB; SPN132(X) - FMI 31
IK-08005122016-09-01. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS; ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. WORKSTAR UPPER RADIATOR HOSE UPDATE
151082015-09-21. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. COOLANT LOSS AND ILLUMINATING AMBER RESULTING FROM RADIATOR INLET HOSE POSSIBLY SEPARATING FROM THE RADIATOR INLET *CN
155032015-09-02. Service bulletin. ENGINE. TSB CONTAINS AN OWNER'S NOTIFICATION LETTER. SELECT DOCUMENT SEARCH BUTTON BELOW. A POTENTIAL ENGINE DERATE OR SHUTDOWN HAS BEEN DETERMINED IN CERTAIN DURASTAR AND WORKSTAR MODELS *CN
MIN-141202015-02-20. Service bulletin. ENGINE. NAVISTAR: INFORMATION PROVIDED REGARDING THE INSPECTION OF STARTER CABLE ROUTING ON SOME TRUCKS, WITH CERTAIN ENGINES. *PE

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.