2003 International 4300 Technical Service Bulletins

81 technical service bulletins (TSBs) are on record for the 2003 International 4300. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11029461Feb 3, 2026Electrical system. This tool is designed to compare Diamond Logic feature data across multiple vehicle configuration files. It allows users to quickly load files either manually or directly from the Diamond Logic Builder Vehicles folder using VIN-based selection. As files are added or removed, the comparison runs automatically with no manual action required.
• 11028359Jan 2, 2026Engine. Engine replacements for all International engines will need to follow this procedure.
• 11027310Dec 19, 2025Body and structure. This document will guide the user through a step-by-step procedure for detecting water leaks in vehicle cabs and windshields using an ultrasonic sound detector.
• 11026148Dec 5, 2025Transmission and drivetrain. 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.)
• 11026190Nov 6, 2025Body and structure. In some geographic areas, ambient temperatures reaching below 15°F (-10 °C), including high levels of humidity, an operator may experience engine stalling, low performance, and or poor aftertreatment performance. This is caused by condensation accumulating and freezing within the Charge Air Cooler (CAC); affecting air flow into the engine.
• 11022447Aug 28, 2025Other or unknown. Title: Service Portal iKNow Feedback Case Types Applies To: All
• 11022310Aug 25, 2025Transmission and drivetrain. Title: Driveline Information Center and Troubleshooting Procedures Applies To: All Vehicles
• 11021609Jul 18, 2025Other or unknown. Title: A/C Refrigerant and Oil Capacities Applies To: All current models
• 11021606Jul 17, 2025Other or unknown. Title: Fan belt replacement guidelines for frayed edges Applies To: All Models
• 11021607Jul 7, 2025Other or unknown. Title: Engine Emission Label Replacement, Certificate of Conformance and Clean Idle Sticker Addition Procedure Applies To: All Navistar Powered Trucks Requesting Engine Emission Label Replacement, Certificate of Conformance and/or Clean Idle Sticker, Clean Truck Check
• 11019106Jun 4, 2025Steering. Title: Steering Gear Seal Repair Guidelines Applies To: Steering gears
• 11019111May 29, 2025Other or unknown. Title: Vehicle Programming Information for Engine: Single Box 1998-2004 I6 & V8 Applies To: Single Box 1998-2004 I6 & V8
• 11019103May 20, 2025Other or unknown. Title: How to Request a Horsepower Quote Applies To: All International and Cummins Electronic engines
• 11019101May 9, 2025Suspension. This document reminds technicians of the critical relationship between the truck's suspension and the driveline operating angles. The information applies to diesel, gas, and electric vehicles.
• 11017821Apr 24, 2025Other or unknown. Applies To: All Navistar Powered Trucks Requesting Engine Emission Label Replacement, Certificate of Conformance and/or Clean Idle Sticker, Clean Truck Check
• 11010428Oct 8, 2024Suspension. This article addresses chassis lean conditions on all chassis. This does not include any diagnostics for body leans such as a cab lean. Keep in mind that a chassis lean may cause or accentuate a cab lean. Filling out the printable form and using the notes in blue will help you to determine the source of the lean and identify the action and parts required to correct the lean.
• 10251414Feb 21, 2024Engine cooling, Electrical system. Starter Diagnostics and warranty claim procedure; all engines EXCLUDING Cummins ISB engine with Allison transmission or PSI engine.
• 10251409Feb 21, 2024Suspension, Steering. Suggested alignment target values when performing a vehicle axle alignment.
• 10246231Nov 21, 2023Electrical system. J1939 Data Link Source Address Information
• 10243610Sep 7, 2023Engine cooling. How to request a horsepower quote; all International and Cummins engines
• 10234000Mar 15, 2023Electrical system, Engine cooling. Starter diagnostics and warranty claim procedure for all engines and all chassis EXCLUDING vehicles equipped with PSI engines or Cummins ISB engine with Allison transmissions
• 10227455Nov 16, 2022Electrical system. J1939 Data link source address information
• 10222490Sep 29, 2022Engine cooling. Pico Scope CCOS (Crankcase Separator Test)
• 10219330Aug 23, 2022Engine cooling. PicoScope Test One Channel RCT
• 10219325Aug 23, 2022Electrical system. PicoScope Test Resistance and Ohmmeter
• 10219319Aug 23, 2022Electrical system. PicoScope Test for Datalink (CAN) Health Shorts & opens
• 10219314Aug 23, 2022Electrical system. PicoScope Test - Battery Loss of Charge - Parasitic Draw Test
• 10209487Mar 14, 2022Electrical system. Calculating pulses per mile (speedometer setting); only models equipped with International engines
• 10208431Feb 10, 2022Electrical system, Equipment. J1939 Data Link Source Address Information
• 10204139Nov 2, 2021Steering. Power Steering Diagnostics Flow / Pressure Specifications For Power Steering Gears and Power Steering Pumps
• 10204137Nov 2, 2021Electrical system. J1939 Data Link Troubleshooting
• 10204136Nov 2, 2021Engine 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.
• 10201758Sep 30, 2021Engine cooling, Equipment. Engine Oil Capacities. All International electronic engines 1994 to present and Cummins ISB, ISM, or ISX engines
• 10199915Jul 19, 2021Brakes. General wheel speed sensor troubleshooting
• 10198708Jun 4, 2021Engine cooling. Aftertreatment Clamp Corrosion; Single Can Aftertreatment Systems
• 10189741Mar 15, 2021Body and structure. Frame Rail Straightness Inspection Procedure
• 10189743Mar 4, 2021Suspension. Suggested alignment target values when performing a vehicle axle alignment
• 10181960Oct 9, 2020Body and structure, Equipment. Cab Lean Concern
• 10179296Aug 28, 2020Engine cooling. Codes 141, 142, and 621 in a 2-box ECM/IDM; only models with 2-box ECM/IDM from 2003-2007
• 10179294Aug 25, 2020Equipment, Engine. Driveline Information Center and Troubleshooting Procedures
• 10179289Aug 3, 2020Electrical system, Engine, Transmission and drivetrain. Repair Procedures for Vehicles Struck by Lightning
• 10177096Jun 18, 2020Engine cooling. A/C Refrigerant and Oil Capacities
• 10173025Mar 26, 2020Seat belts, Seats, Latches, locks and linkages, Other or unknown, Equipment. Cleaning and Disinfecting Trucks and Buses
• 10172045Feb 27, 2020Electrical system. J1939 Data Link Troubleshooting
• 10170952Jan 13, 2020Brakes. Bendix EC80 Blank Module Replacement Program; This document will guide the user through selecting the correct ABS module when it has been determined a replacement is needed. Only Models with EC-80 ABS Controller
• 10169879Dec 19, 2019Electrical system, Equipment. Key Codes and Key Cutting Information (Not for CV Series)
• 10165643Sep 9, 2019Engine cooling. Oil Capacities; All Electronic International Engines 1994 - Present. Cummins ISB, ISM & ISX
• 10163416Jul 15, 2019Suspension. Suspension Lean Diagnostics; All models
• 10162034Jun 26, 2019Electrical system. J1939 Data Link Source Address Information
• 10156324Nov 13, 2018Equipment, Transmission and drivetrain. Driveline Information Center and Troubleshooting Procedures

← All problems reported for the 2003 International 4300