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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

Bulletins, newest first
IK08006052022-09-07. Service bulletin. ELECTRICAL SYSTEM. PicoScope Test 5V & 12V Intermittent Open and Short circuit diagnostics
IK16001452022-07-05. Service bulletin. STRUCTURE. Front cab mount bushings/insulators MV, HV, DuraStar, and WorkStar vehicles used in severe vocations
IK16001312022-04-01. Service bulletin. EXTERIOR LIGHTING; STRUCTURE. Cab water leak troubleshooting tips; HX with steel cab only
IK08003512022-03-02. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. J1939 Data Link Source Address Information
IK12014642022-01-06. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING. High Pressure Fuel Pump external leaks from weep hole. only trucks with 2010 MaxxForce 11/13L, all N13, or A26 engines
IK10000032021-12-07. Service bulletin. STEERING. Power Steering Diagnostics Flow / Pressure Specifications For Power Steering Gears and Power Steering Pumps
IK08000802021-12-07. Service bulletin. ELECTRICAL SYSTEM. J1939 Data Link Troubleshooting
IK08000742021-12-07. Service bulletin. ENGINE AND ENGINE COOLING; VEHICLE SPEED CONTROL. Dual Drive Cab Throttle Position Harness for APS/IVS throttle pedals; only models with both left hand and right hand drive.
IK26002542021-11-03. Service bulletin. ELECTRICAL SYSTEM. New or replacement body control Module (BC,BCM) not detected; Gen 4 BCM
IK26002512021-11-03. Service bulletin. ENGINE AND ENGINE COOLING. How to obtain As built parameter list
IK13000862021-11-03. Service bulletin. ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC). Bendix Stability control - customer satisfaction performance improvement; Specific Emergency / Tanker applications only.
IK12014582021-10-02. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ENGINE AND ENGINE COOLING. Oil leaks at the Bottom of the Oil Filter Module; Only International A26, N13, or 2010 and newer 11 and 13 engines
IK12012992021-10-02. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY. Engine Oil Capacities. All International electronic engines 1994 to present and Cummins ISB, ISM, or ISX engines
IK16001312021-09-02. Service bulletin. STRUCTURE. Cab water leak troubleshooting tips
IK12013912021-09-02. Service bulletin. ENGINE AND ENGINE COOLING. Snap-On torque wrench requirement for all big bore engine connecting rod bolt(s).
IK04000402021-08-04. Service bulletin. SERVICE BRAKES, HYDRAULIC; SERVICE BRAKES, AIR. General wheel speed sensor troubleshooting
IK07001122021-07-02. Service bulletin. ENGINE AND ENGINE COOLING. Aftertreatment Clamp Corrosion; Single Can Aftertreatment Systems
IK19002592021-06-03. Service bulletin. STRUCTURE. Day cab roof air deflector causing loud vibration noise at highway speed
IK12014572021-06-03. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Cummins B6.7 Grid Heater Relay
IK26001282021-04-02. Service bulletin. VEHICLE SPEED CONTROL; ENGINE AND ENGINE COOLING. A26, N13, and 2010 EPA MaxxForce 11 and 13 engine Auxiliary Programable Parameters
IK02000132021-04-02. Service bulletin. SUSPENSION. Suggested alignment target values when performing a vehicle axle alignment
IK01000512021-04-02. Service bulletin. STRUCTURE. Frame Rail Straightness Inspection Procedure
205102021-04-02. Service bulletin. ENGINE AND ENGINE COOLING; VEHICLE SPEED CONTROL. On certain trucks equipped with an automatic transmission, if the automatic transmission is still in drive or reverse position and the stationary PTO switch is engaged, the engine RPM will ramp up and may overcome parking brake hold capability resulting in possible vehicle movement.
IK15000742020-12-02. Service bulletin. FUEL SYSTEM, DIESEL; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; FUEL SYSTEM, OTHER:FUEL FILTER; ENGINE AND ENGINE COOLING. Fuel Filters, Winter Additives, and Blending Fuels for Cummins® Engines
IK16002332020-11-02. Service bulletin. STRUCTURE; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Cab Lean Concern

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