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).
IK2600090
New CARB Idle Reduction Change Request
IK4300035
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.
IK2600047
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.
IK0600030
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.)
IK2200169
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.
IK2200119
IC Bus Operator's Manuals
IK1201009
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.
IK1201490
The purpose of this article is to provide updated guidance regarding PSI 8.8L repair versus engine replacement.
IK3400001
Title: Service Portal iKNow Feedback Case Types Applies To: All
IK2300017
Title: Electric Vehicle Air Dryer Operation
IK1400005
Title: Driveline Information Center and Troubleshooting Procedures Applies To: All Vehicles
IK0800686
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
IK2200170
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
IK2300021
Title: Servicing Air Conditioning Systems on Electric Vehicles
IK0500054
Title: Steering Gear Seal Repair Guidelines Applies To: Steering gears
IK2600069
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
IK2300041
Title: 6090/6091 Connector Damage Applies To: IC Bus® Electric CE Series, International® eMV™ Series
IK1400023
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.
iK1201485
This document will guide the user through the exhaust manifold inspection process and cover the change in the exhaust manifold installation procedure to prevent damage due to thermal expansion.
IK0400037
This document is to guide users to eliminate brake pedal rattle noise.
IK08000403
This document details the procedure that must be followed to ensure proper alternator troubleshooting.
IK0800482
This document covers battery diagnostics, maintenance and storage requirement.
IK0800351
J1939 Data Link Source Address Information
IK0300010
Diagnosis of chassis wander complaints.
IK0400040
General Wheel Speed Sensor Troubleshooting
IK2200109
Bus seat back foam inspection guidelines
IK1201457
Cummins B6.7 Grid Heater Relay
IKo800080
J1939 Data Link Troubleshooting
IK1200101
Cummins Programming guide and fault codes285 & 265; only vehicles built with Cummins B6.7, X15, or L9 engines
IK0800407
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
IK0700115
QLS Emergency ECM Calibration; only models equipped with Cummins B6.7, X15, L9, or International A26 engines
IK1201472
Pico Scope CCOS (Crankcase Separator Test)
IK0800607
PicoScope Test - Battery Loss of Charge - Parasitic Draw Test
IK0800609
PicoScope Test for Datalink (CAN) Health Shorts & opens
IK0800610
PicoScope Test Resistance and Ohmmeter
IK1201469
PicoScope Test One Channel RCT
IK0400046
WABCO Full Power Brake Diagnostic Code (DTC) Index
IK0800080
J1939 Data Link Troubleshooting
IK1000003
Power Steering Diagnostics Flow / Pressure Specifications For Power Steering Gears and Power Steering Pumps
IK2600251
How to obtain As built parameter list
IK0400028
How to program parameters after changing WABCO FPB ECU (Parking brake shows N/A)
IK2600254
New or replacement body control Module (BC,BCM) not detected; Gen 4 BCM
IK1201299
Engine Oil Capacities. All International electronic engines 1994 to present and Cummins ISB, ISM, or ISX engines
IK0700112
Aftertreatment Clamp Corrosion; Single Can Aftertreatment Systems
IK1201459
Cummins engine vibration with aftermarket air conditioning installed
IK1900263
Bus with Cummins B6.7 engine and Dual A/C - Cylinder Head Failures
IK1500103
Acceptable Propane Fill Adapter for Refueling
IK1500074
Fuel Filters, Winter Additives, and Blending Fuels for Cummins® Engines
IK0800504
Repair Procedures for Vehicles Struck by Lightning
IK0800591
CE Bus Cowl Panel Relay Kit
IK2200150
This document will guide the user through determining if there is a sealing issue with the rear emergency door on a CE Bus.
IK2200149
This article is for adding additional protection to the driver's area of the bus to help mitigate the transmission of germs.
IK0800475
Radio Diagnostics and Information
IK2200001
Bus Air Conditioning Service Contacts for HVAC Information
IK1600258
Cleaning and Disinfecting Trucks and Buses
IK1201398
ISB 6.7 Frequent Regeneration
IK0700097
NEW Ultrasonic DEF Head Unit; All SCR vehicles
IK2200145
Bus Strobe Light Replacements
IK2200073
Bus Body Entry Door Switch, LH Panel Mounted
19506
The ADB22X caliper on the left (driver side) rear corner on school bus applications may experience an unintended reduction in running clearance during operation, which can lead to a dragging brake. The problem occurs intermittently.
IK0700079
SCR Vehicles Setting DEF Quality Faults due to Crossed DEF Tank Coolant Lines or Inverted DEFTHV
IK0200013
Suggested alignment target values when performing a vehicle axle alignment
IK0800484
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
IK2200116
Bus Door Adjustment procedure for Electric and Air; only models built 09/15/11 or later
IK0900077
Fuel Fired Engine Coolant Heaters
IK0800503
ISB Starting System Diagnostics; Only models built with cummins ISB engines
IK0900132
Bus coolant hose kink; only models with propane or gasoline engines
IK0800564
Child Checkmate is not functioning correctly; Only buses with features 47EXC, 47EXD, 47EXE built from 4/18/16 to 5/15/17
IK0400016
Aggressive Brakes with Air Brake Foot Valve Leak on Bus; only models with feature code 04WEA - Parking Brake Interlock - With Air Brakes Only
IK0800522
Repair Information for Damaged Headlight Connector
IK2600007
How to Get from History and Program a BCM or ESC; only models equipped with a BCM or ESC
IK2600215
Applying Advanced Logic Templates; only models equipped with a BCM or ESC
REC18V-563-18E-0
The wheelchair lift positioning input cam may fail while the lift is in use resulting in a disabled cutoff switch.
IK2200143
Diagnosis and repair of intermittent operation of the Child Checkmate reset button.
IK1201360
Cylinder Performance Analyzer (CPA) Resource Center
IK1900220
Geotab with WYE Cable Installation; only models equipped with OnCommand Connection
IK1600246
Hood Cable replacement for Gas and Propane CE Bus only
IK0700106
DEF Tank Nozzle Insert; only models with SCR systems
REC18501
A fuel system relay for the propane booster pump and scavenge pump may experience intermittent continuity causing the fuel pump to stop running resulting in unintended stalling condition, no start, or hard start condition.
IK2200070
Bus Body Tie Down, Floor Sill Repair
IK4300001
Updating OnCommand Link with Accelerator
IK1201362
ISB CAC Port Plug; onle vehicles with Cummins ISB engine
IK2200137
Bus Passenger Window Troubleshooting; only buses built after 4/17/17
IK2700100
OnCommand EZ-Tech
IK2200139
Driver?s seat belt tongue button; Only with Seat Belt Part numbers 4091405c1 thru 4091408c1
REC17512
Certain IMMI school bus seat assemblies equipped with 3-point lap and shoulder belts do not satisfy the requirements of FMVSS 210.
IK2500511
Using Supplier Software to Check DTCs
IK2200087
Bus Entrance Door Adjustment Procedures; only models built prior to 9/15/2011
IK2700065
EZ-Tech Download Center
IK0600020
Determine Wheel Speed or Driveline Vibration using a Smart Phone and Free VibSensor Application
IK0800374
How To Get A Helios Capture
IK0800284
Ambient Air Temperature (AAT) Sensor Faults/Location/Diagnostics
IK2500127
Using Vehicle Health Report Faults
IK0800517
Cummins Engine Remote Engine Speed Control; only with feature code12XAT or 12XBM
IK2700090
OnCommand EZ-Tech Download Center
IK1900203
Troubleshooting & Resetting HVAC Doors; only vehicles with Feature Codes 0016WCT and 0016WCS
IK0700100
2010 MaxxForce 7 engine DPF Cracking
IK0700096
Urea Quality Sensor (UQS) Supplemental Diagnostic and Service Information
IK2900029
Diagnostic Interface Cable Reference Guide
REC17508
The castellated nut and cotter pin that fastens the tie rod end to the steering knuckle may have not been tightened to their specified assembly torque and over time may loosen resulting in looseness in steering; School Bus only.
IK0800092
First Check to make when Troubleshooting any Body Controller or ESC Issue
IK0400154
Hydraulic Brake System Park Brake Inspection and Adjustment Procedures; only models with Hydraulic Brake system equipped with 04GBJ Park Brake
IK0400155
IC Bus Service Brake Switch Inspection
IK0800546
HVAC fault 2609-19 with 4th Gen BCM; Only models equipped with 4th generation BCM
IK1201373
PSI Propane Engine Exhaust Leak; only models equipped with PSI 8.8L Propane engine
IK2900030
Dealer EZ-Tech and Diagnostic Software Support Resource Center
IK1201363
CPA Injector Misfire Detection; Only models with 2004 thru 2017 International engines.
IK0800445
Controller Updates for 500k Baud; only vehicles with 500k baud data link
REC17503
The circuit that provides electrical power to the heater booster pump may have been terminated in an unfused cavity of the power distribution center resulting in no circuit protection.
IK1201260
Cylinder Pack - Update for Excessive Lubrication Oil Consumption
IK1201357
Installing and Servicing the Rear Sump Stainless Steel Oil Pan on N13 Engines
IK2600008
How to Diagnose Electrical Problems with Diamond Logic Builder; only models equipped with a BCM or ESC
IK1201359
Breather Filter and Crankcase Tube Freezing Issue in Below Freezing Temperatures; only models with Cummins ISB 6.7 and QSB 6.7
IK0500058
Steering Fluids
IK0400147
Wabco Hydraulic Power Brake cap/grounds diagnostics and repair procedure
REC16510
The formed heater hose to the driver?s heater over time may fatigue, resulting in a split hose.
REC16511
The formed heater hose to the driver?s heater over time may fatigue, resulting in a split hose.
IK1201248
Cooling System Flush Procedure
REC16V-765_2016-
The platforms included on the subject S-Series model wheelchair lifts are equipped with folding link arms that may have pivot holes that are too big, allowing the bearings to move out of position.
MIN16130
Certain fuel fill ports may have not been tightened to their assembly specification at the time of assembly by the supplier and require replacement.
IK1200029
RADIATOR INTERNAL RESTRICTION AND FLUSH PROCEDURE
IK1900228
2010 and Newer Vehicle Air Conditioning Diagnostics (Start Here)
MIN16108
Certain vehicles may have been built without an air line causing the fan drive to run continuously
REC16502
The hood latch straps used to latch the hood closed may become elongated and not return to their original specified length.
REC16503
The hood latch straps used to latch the hood closed may become elongated and not return to their original specified length.
SR-16501
SAFETY RECALL 16501 - STOP ARM BLADE STOP DECAL
IK1900172
Espar Airtronic Heater Diagnostic Guide
AFC15902
The Body Control Module (BCM) may not go to sleep when the ignition is in the OFF position and could result in excessive battery drain when the vehicle has not been operated for an extended period of time.
MIN15109
The rear engine mount bolts may not be tightened to their specified torque.
IK2200016
Post Trip Inspection System Will Not Disarm or Does Not Operate Correctly; excludes Child Reminder System or Child Check Mate.
IK0900114
On certain DuraStar and CE Bus models with Cummins ISB engines, the upper radiator hose saddle clamps are positioned improperly,and may cause punctures in the upper radiator hose. New saddle clamps, with a revised design and positioning, must be installed to correct the issue, as outlined in the following document.
REC15504
A diaphragm in the spring brake chamber may not be seated fully into the pressure plate and may cause internal leakage in the chamber, resulting in the parking brake to not fully release and drag.
REC15505
A diaphragm in the spring brake chamber may not be seated fully into the pressure plate and may cause internal leakage in the chamber, resulting in the parking brake to not fully release and drag.
MIN15105
The wheelchair lift mounting bracket may have been installed with four mounting bolts instead of the required eight bolts.
IK1500051
ONLY VEHICLES EQUIPPED WITH DAVCO FUEL PRO 382; TECHNICAL MANUAL INSTALLATION DIAGNOSTICS AND SERVICE
IK2200132
DRIVER AND PASSENGER SEAT BELTS
IK1400033
TORQUE CHANGE FOR 5/8 INCH REAR AXLE SHAFT FLANGE MOUNTING STUD WITH CONE LOCKS AND FLAT WASHER TYPE HARDWARE.
IK1300055
Transmission Upshifting too Fast; Only with Allison Gen 4 LCT (1000 and 2000 series) Transmission
IK0800411
Body Controller Resource Center
IK1300085
IKNOWLEDGE: NAVISTAR CE BUS, BE BUS, AND DURASTAR MODELS DUE TO VEHICLE VOCATION, LOADING, OPERATING ENVIRONMENT, AND DRIVING HABITS, MAY EXPERIENCE BRAKE LINING WEAR RATE THAT WILL VARY. *TA
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.