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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: Transmission and driveline are shown. Show all

Bulletins, newest first
IK06000302025-12-05. Service bulletin. POWER TRAIN. This document will guide the user through understanding Prop Shaft Codes and understanding the variations of prop codes. (Metric Prop codes start with the number a 4 and Non metric Prop codes start with a 2.)
IK14000052025-09-02. Service bulletin. POWER TRAIN. Title: Driveline Information Center and Troubleshooting Procedures Applies To: All Vehicles
IK08005042020-09-02. Service bulletin. ELECTRICAL SYSTEM; ENGINE; POWER TRAIN. Repair Procedures for Vehicles Struck by Lightning
IK14000052019-04-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; POWER TRAIN:DRIVELINE; EQUIPMENT. Driveline Information Center and Troubleshooting Procedures
IK13000552018-04-02. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. Transmission Upshifting too Fast; Only with Allison Gen 4 LCT (1000 and 2000 series) Transmission
IK13000382018-04-02. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. Transmission Control Module Relocation; only with Allison WT Gen 3 Transmission
IK13001622018-04-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES. Transmission Cooler Line Routing; Only models built Prior to November 29, 2017 with Cummins ISL engine
IK11000052017-09-08. Service bulletin. POWER TRAIN:CLUTCH ASSEMBLY. Eaton Clutch Information
MIN-151072015-09-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN:MANUAL TRANSMISSION. TRANSMISSIONS CONTROLLER FOR SPEED; FEATURE CODE AND APPLICATION CODE THAT IDENTIFIES TORQUE CONTROL SHIFTING *CN

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