Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
IK1201493
The purpose of this article is to provide updated repair guidelines for the engine oil pan leak on all 8.8L gasoline and LPG engines. Engine oil can leak from the rear of the engine oil pan due to an excessive gap in the sealing area between the engine oil pan and the engine block.
IK2600052
This article describes how to fix a speedometer that does not read accurately. An inaccurate speedometer can be caused by changing the tire size, changing rear axle ratio (RAR), or by parameters being inadvertently changed during a programming event. Use the formulas and calculator below to correct the pulses per mile (PPM).
IK1900198
This article only applies to Models w/ 0016UZL Built Between 06/23/2014 – 05/11/2020 OR Models w/ 0016UZL w/ Safety Recall 14516 Completed Reference the appropriate Technician Manual for models outside of this population. Safety Recall 14516 has been issued for units built before June 23, 2014. For LT and 2018+ LoneStar: If there is a complaint of the bunk blower turning off after an auto start event, the BCM needs to be updated to Data Version 323 or higher. • The bunk blower turning off was only present in BCM Data Version 309 to Data Version 322 To properly diagnose the system, you must ensure the recall has been performed. Only the "Cold Loop" sealed refrigerant core PN # 2614669C1 is to be replaced when the refrigerant circuit fails. DO NOT REPLACE THE COMPLETE UNIT IF THE A/C IS NOT FUNCTIONING. Complete unit is not Warrantable Refer to the BASIC TROUBLESHOOTING below before replacing any components. This will help you identify which component is at fault or any electrical issues. Refer to PARTS INFORMATION to properly identify the parts that may require replacement The A/C portion of the system is listed below in the parts section. The 16UZL No-Idle HVAC system is designed to disengage when the engine is started, and can be turned on with the key in any position. This battery-powered no-idle HVAC system provides heating and cooling of the sleeper area without use of the vehicle engine. The system is comprised of the no-idle HVAC components located in the sleeper HVAC module, a separate fuel-operated coolant heater mounted under the sleeper, and four additional batteries housed in a second battery box. The no-idle HVAC system shares the air handling assembly and several major components with the truck's standard HVAC system. Most importantly, the shared evaporator core contains refrigerant circuits for both the no idle system and the truck's standard A/C system. With this configuration, some procedures required to service the no idle A/C system will require opening the refrigerant circuit of the truck's standard A/C system. Trucks equipped with the 16UZL No-Idle HVAC system have two separate HVAC systems (Standard Truck A/C and the MaxxPower unit); it is important to identify each clearly, so you are troubleshooting the correct system. Per the Operator's Manual page 10: Run the heater at least once a month during the year (for a minimum of 15 minutes).
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New CARB Idle Reduction Change Request
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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. The program presents results in an interactive table that shows feature codes, descriptions, access levels, and whether each feature is present in each selected file. Built-in search, filtering, and sorting make it easy to locate specific features or focus only on differences between files. Column visibility can be customized to show or hide descriptions and access information as needed. Users can remove files individually or clear all files at once, with results updating instantly. The tool also includes reporting and export options that reflect exactly what is visible on screen, allowing results to be printed, copied, saved as text, or exported to CSV for use in Excel or other spreadsheet tools. Overall, the program streamlines the process of comparing vehicle feature configurations, helping users quickly identify differences, validate setups, and document results without manual comparison or external tools.
IK2600255
This document provides guidance for assessing the feasibility of implementing a customer-requested change to an engine or vehicle parameter/feature. Customer requested changes will be approved in accordance with the requirements specified in 40 CFR Part 1037 to ensure continued compliance with greenhouse gas (GHG) regulations.
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Engine replacements for all International engines will need to follow this procedure.
IK1600272
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.
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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.)
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This document will guide the user through repairing a Next Gen CE Bus Driver's Window with loose, displaced, or falling-out upper or lower seals. See symptoms below for an example of the issue.
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IC Bus Operator's Manuals
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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. This article lists all the currently available winter front covers that can be installed on the front grille and bumper to reduce cold air flow to the engine compartment.
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Title: Service Portal iKNow Feedback Case Types Applies To: All
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Title: Electric Vehicle Air Dryer Operation
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Title: Driveline Information Center and Troubleshooting Procedures Applies To: All Vehicles
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Title: Radio Clock is Freezing Applies To: Next Gen CE Bus
IK1900022
Title: A/C Refrigerant and Oil Capacities Applies To: All current models
IK0900157
Title: Fan belt replacement guidelines for frayed edges Applies To: All Models
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Title: Next Gen CE Bus Starter Interlock Dash Chime Applies To: Next Gen CE Bus with starter interlock feature built prior to 2/19/25
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Title: Servicing Air Conditioning Systems on Electric Vehicles
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Title: Steering Gear Seal Repair Guidelines Applies To: Steering gears
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Title: How to Request a Horsepower Quote Applies To: All International and Cummins Electronic engines
IK2200088
Title: Factory Installed Air Conditioning, EC4.0 System BE, CE, FE, RE Bus Models
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Title: 6090/6091 Connector Damage Applies To: IC Bus® Electric CE Series, International® eMV™ Series
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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.
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Inspection of camshaft for PSI 8.8L Propane and Gasoline Engines
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J1939 Data Link Source Address Information
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Diagnosis of chassis wander complaints.
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General Wheel Speed Sensor Troubleshooting
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Bus seat back foam inspection guidelines
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Cummins B6.7 Grid Heater Relay
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J1939 Data Link Troubleshooting
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Cummins Programming guide and fault codes285 & 265; only vehicles built with Cummins B6.7, X15, or L9 engines
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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
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Pico Scope CCOS (Crankcase Separator Test)
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PicoScope Test - Battery Loss of Charge - Parasitic Draw Test
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PicoScope Test for Datalink (CAN) Health Shorts & opens
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PicoScope Test Resistance and Ohmmeter
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PicoScope Test One Channel RCT
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WABCO Full Power Brake Diagnostic Code (DTC) Index
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J1939 Data Link Troubleshooting
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Power Steering Diagnostics Flow / Pressure Specifications For Power Steering Gears and Power Steering Pumps
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How to obtain As built parameter list
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How to program parameters after changing WABCO FPB ECU (Parking brake shows N/A)
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New or replacement body control Module (BC,BCM) not detected; Gen 4 BCM
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Engine Oil Capacities. All International electronic engines 1994 to present and Cummins ISB, ISM, or ISX engines
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Aftertreatment Clamp Corrosion; Single Can Aftertreatment Systems
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Cummins engine vibration with aftermarket air conditioning installed
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Fuel Filters, Winter Additives, and Blending Fuels for Cummins® Engines
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Repair Procedures for Vehicles Struck by Lightning
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CE Bus Cowl Panel Relay Kit
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This document will guide the user through determining if there is a sealing issue with the rear emergency door on a CE Bus.
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This article is for adding additional protection to the driver's area of the bus to help mitigate the transmission of germs.
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Radio Diagnostics and Information
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Bus Air Conditioning Service Contacts for HVAC Information
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Cleaning and Disinfecting Trucks and Buses
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ISB 6.7 Frequent Regeneration
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NEW Ultrasonic DEF Head Unit; All SCR vehicles
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Bus Strobe Light Replacements
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Bus Body Entry Door Switch, LH Panel Mounted
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SCR Vehicles Setting DEF Quality Faults due to Crossed DEF Tank Coolant Lines or Inverted DEFTHV
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Suggested alignment target values when performing a vehicle axle alignment
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Voltage gauge drops on cold engine start-up; Only models built with Cummins ISB, B6.7, ISL, or L9 engines
K1200716
Engine Emission Label Replacement, Certificate of Conformance and Clean Idle Sticker Addition Procedure
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Bus Door Adjustment procedure for Electric and Air; only models built 09/15/11 or later
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ISB Starting System Diagnostics; Only models built with cummins ISB engines
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How to Get from History and Program a BCM or ESC; only models equipped with a BCM or ESC
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Applying Advanced Logic Templates; only models equipped with a BCM or ESC
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Diagnosis and repair of intermittent operation of the Child Checkmate reset button.
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Cylinder Performance Analyzer (CPA) Resource Center
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Geotab with WYE Cable Installation; only models equipped with OnCommand Connection
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DEF Tank Nozzle Insert; only models with SCR systems
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Bus Body Tie Down, Floor Sill Repair
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Updating OnCommand Link with Accelerator
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Bus Passenger Window Troubleshooting; only buses built after 4/17/17
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OnCommand EZ-Tech
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Driver?s seat belt tongue button; Only with Seat Belt Part numbers 4091405c1 thru 4091408c1
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Using Supplier Software to Check DTCs
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EZ-Tech Download Center
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Determine Wheel Speed or Driveline Vibration using a Smart Phone and Free VibSensor Application
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How To Get A Helios Capture
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Ambient Air Temperature (AAT) Sensor Faults/Location/Diagnostics
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Using Vehicle Health Report Faults
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OnCommand EZ-Tech Download Center
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Troubleshooting & Resetting HVAC Doors; only vehicles with Feature Codes 0016WCT and 0016WCS
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2010 MaxxForce 7 engine DPF Cracking
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Urea Quality Sensor (UQS) Supplemental Diagnostic and Service Information
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Battery Testing, Diagnostics, and Maintenance information
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Diagnostic Interface Cable Reference Guide
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First Check to make when Troubleshooting any Body Controller or ESC Issue
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IC Bus Service Brake Switch Inspection
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HVAC fault 2609-19 with 4th Gen BCM; Only models equipped with 4th generation BCM
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Cummins ISB Engine Remote Engine Speed Control with Feature 12XAT
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Dealer EZ-Tech and Diagnostic Software Support Resource Center
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CPA Injector Misfire Detection; Only models with 2004 thru 2017 International engines.
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How to Diagnose Electrical Problems with Diamond Logic Builder; only models equipped with a BCM or ESC
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Breather Filter and Crankcase Tube Freezing Issue in Below Freezing Temperatures; only models with Cummins ISB 6.7 and QSB 6.7
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Steering Fluids
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Cooling System Flush Procedure
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Repair Information for Damaged Headlight Connector
121602
Change in Seat Belt Manufacturer - Inspection and Replacements
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Post Trip Inspection System Will Not Disarm or Does Not Operate Correctly; excludes Child Reminder System or Child Check Mate.
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DPF Snap Accel Test - Quick Test to All vehicles with DPFs
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Cluster Software Update Instructions
AFC 14905
Lower radiator hose may chafe on the frame rail
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.