2017 International LT TSBs
396 Technical Service Bulletins across 16 categories
Categories
Engine
104 bulletinsThis article only applies to Models w/ 0016UZL Built Between 06/23/2014 05/11/2020 OR Models w/ 0016UZL w/ Safety...
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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).
This document enables technicians to: 1.
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Accurately identify International A26B engine control systems. 2. Understand the programming requirements and system behavior. 3. Perform programming tasks independently without needing technical support.
This document enables technicians to: 1.
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Accurately identify International A26A engine control systems. 2. Understand the programming intricacies related to these systems. 3. Perform programming tasks independently without needing technical support.
This document provides guidance for assessing the feasibility of implementing a customer-requested change to an engine or vehicle parameter/feature.
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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.
New CARB Idle Reduction Change Request
Engine replacements for all International engines will need to follow this procedure.
In some geographic areas, ambient temperatures reaching below 40F (4C), including high levels of humidity, an operator...
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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 currently available winter front covers that can be installed on the front grille and bumper to reduce cold air flow to the engine compartment.
This document guides dealer technicians through the programming process for an A26a (2017-2021) engine swap (both NEU...
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and new engines).
In some geographic areas, ambient temperatures reaching below 15F (-10 C), including high levels of humidity, an...
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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.
Title: Engine Emission Label Replacement, Certificate of Conformance and Clean Idle Sticker Addition Procedure Applies...
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To: All Navistar Powered Trucks Requesting Engine Emission Label Replacement, Certificate of Conformance and/or Clean Idle Sticker, Clean Truck Check
Title: Replacing the Crankshaft Gear on S13 Engines
Title: Supplemental 2017 A26 (A26A) Misfire Diagnostics Applies To: 2017 A26 ESN 4500000 - 4599999
Title: Supplemental A26 MAF Fault Diagnostics Applies To: All A26 Engines
Title: How to Request a Horsepower Quote Applies To: All International and Cummins Electronic engines
Applies To: All Navistar Powered Trucks Requesting Engine Emission Label Replacement, Certificate of Conformance and/or...
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Clean Idle Sticker, Clean Truck Check
This document will guide the user on what to do when they receive a fault code after programming an ECM on A 26A engines
Certain International vehicles built with A26 engines does meet the emission requirements for J1939-Stationary Test
Starter Diagnostics and warranty claim procedure; all engines EXCLUDING Cummins ISB engine with Allison transmission or...
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PSI engine.
Rebuilding Cylinder Heads on Certain MaxxForce 11/13, N13, and A26 engines; 2010 to present.
A26 and S13 Fuel Gelling; only vehicles equipped with International A26 or S13 engines
No Idle HVAC run time shorter than expected - Bregstrom; Only Sleeper cab models with feature code 16UZL or 16VLN.
How to request a horsepower quote; all International and Cummins engines
Snap-On torque wrench requirement for all big bore engine connecting rod bolts; A26, MaxxForce 13, N13 engines
Removal and Installation of the Air Cleaner Assembly Cover and Air Filters; All Engines and only HX and LT series trucks...
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with feature code 012VCB or 012VBZ Air Cleaner Assembly
This Emissions Recall applies to truck models for which, per agreement with EPA and CARB, Navistar, Inc.
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provided an emergency calibration for International A26 engines when a DEF Quality Sensor (DQS) was not available. This action addressed the Diesel Exhaust Fluid (DEF) Quality Sensor failures in the field and the unavailability of parts due to the worldwide chip shortage. This recall is step two of this program designed to revert all affected vehicles back to the certified calibration and to provide them with the latest improved DQS and Coolant Control Valve (CCV) designs. Additionally, the emergency calibration and the restoration to the certified calibration with the latest improved DQS and Coolant Control Valve (CCV) designs have no effect on vehicle Emissions.
New air compressor incorporates an oil feed dowel O-ring.
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Only models equipped with 2010 and newer MaxxForce 11/13 engines, all N13, and A26 engines
New Air compressor Incorporates an oil feed dowel O-ring; only models built with MaxxForce 11/13, N13, or A26 Engines
Rebuilding cylinder heads on certain EPA 2010 MaxxForce 11/13, N13, and A26 Engines
Cummins Programming guide and fault codes285 & 265; only vehicles built with Cummins B6.7, X15, or L9 engines
Starter diagnostics and warranty claim procedure for all engines and all chassis EXCLUDING vehicles equipped with PSI...
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engines or Cummins ISB engine with Allison transmissions
Rebuilding Cylinder Heads on Certain International MaxxForce 11/13 engines and all International N13 and A26 engines
QLS Emergency ECM Calibration; only models equipped with Cummins B6.7, X15, L9, or International A26 engines
A26 connecting rod replacement process; only models with A26 engines built before November 2019.
QLS Emergency Calibration.
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applies to 2016 and newer Cummins B6.6, X15, and L9 engines and all A26 engines
During high electrical demand, the cables that ground the batteries to the vehicle frame can carry the full system...
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current and may result in excessively hot battery ground cables and in some cases, battery post separation. Only trucks equipped with Cummins engines, feature codes 0008GXK, 0008GHJ and 0008GWY (high output alternators 275 to 375 amp output), and feature codes 0016UZL and 0016VLN (no idle HVAC), or 008XDM and 008XLD (DC to AC power inverter).
Under certain conditions, the Engine Control Module (ECM) programming may not detect when the Exhaust Gas Recirculation...
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(EGR) flow exceeds the predetermined threshold resulting in not setting a fault code and activating the Malfunction Indicator Light (MIL). Only models equipped with International A26 engine.
International A26 engine fuel delivery pressure sensor and harness pigtail eliminated
Installing P/N 7104373C91 A26 Engine Sensor Harness
LINK ride height smart valve operation and troubleshooting guide
High Pressure Fuel Pump external leaks from weep hole.
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only trucks with 2010 MaxxForce 11/13L, all N13, or A26 engines
QLS Emergency Calibration; Models equipped with 2016 and newer Cummins B6.7, X15 and L9 engines or International A26...
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engine.
QLS Emergency Calibration; Models with 2016 Cummins ISX, A26 and EPA 2017 and newer Cummins X15, L9, or B6.7 engines
The Environmental Protection Agency (EPA) and California Air Resources Board (CARB) have approved an emergency...
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calibration to provide temporary relief from the global supply shortage of electrical components. When there is a communication fault in the DEF head unit / Quality Level Sensor (QLS) this temporary calibration will allow the vehicle to operate. The procedure in this document will include diagnosing the DEF head unit / QLS and if found to be defective will advise to install the temporary engine calibration if replacement parts are not available. Any vehicle that receives this calibration will be required to have it removed and a new QLS installed once parts become available, this will be managed through future communication.
Engine Oil Capacities.
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All International electronic engines 1994 to present and Cummins ISB, ISM, or ISX engines
QLS Emergency Calibration.
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Only models with EPA 2017 and newer Cummins X15, L9, or B6.7 engines
Snap-On torque wrench requirement for all big bore engine connecting rod bolt(s).
A26 Fuel Delivery Pressure Sensor (FDP) and Harness Pigtail Eliminated; only trucks equipped with International A26...
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engine
CPA BEAM RCT and Idle Test for A26 engine; only trucks equipped with International A26 engine
The battery ground cable may break at the frame connection resulting in loss of electrical power and unintended engine...
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shut down without warning.
The battery ground cable may break at the frame connection resulting in loss of electrical power and unintended engine shut down without warning.
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Unintended engine shut down without warning may result in a vehicle being stalled on the side of the roadway which could increase the risk of a vehicle crash.
A26, N13, and 2010 EPA MaxxForce 11 and 13 engine Auxiliary Programable Parameters
This document will guide the user through what is normal appearance for a NEU A26 replacement engine assembly.
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Only models built with International A26 engines.
1 channel CPA RCT test for A26 or CV 6.6L; Only trucks built with International A26 or 6.6 engines
7095496C3 EGR Bellows Heat Shield ID; only models equipped with A26 Engine
Fuel Filters, Winter Additives, and Blending Fuels for Cummins Engines
Foot Valve Air Leak- Bendix ATR6 Traction Control Relay Valve Diagnostics; Only Models with Cummins X15 engine and...
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feature code 04ECC air dryer
This document will guide the user through the proper use of the A26 Misfire Detection Session to determine cylinder...
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misfire count releted to the specific misfire DTCs.
A26 Engine fault code SPN: 4364 FMI: 18 Supplemental Diagnostics; Only models built with A26 engine
A26 (engine) SPN: 4364 FMI: 18 Supplemental Diagnostics
A26 (engine) Fuel Gelling; Only models equipped with International A26 engine
Auxiliary Engine Speed Control Cannot Hold Engine Speed When Using Steering Wheel Switches
MaxxPower No Idle Battery-Powered A/C System Diagnostic Guide; Only sleeper cab models with feature code 16UZL
Identifying the Source of Oil Seen at the Lower Flywheel Housing Area.
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Only models equipped with Allison Transmission and International A26 or Cummins L9 engines
Engine Control Module (ECM) calibration update to reduce a false positive Malfunction Indicator Lamp (MIL) for Oxides of...
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Nitrogen (NOx) values when there is no malfunction with the NOx sensor or circuit.
Oil Capacities; All Electronic International Engines 1994 - Present.
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Cummins ISB, ISM & ISX
Installation of a longer engine accessory drive belt to improve drive belt tensioner life.
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Only models equipped with Cummins X15 engine.
LT A26 Cold Side CAC Hose Rupture; only LT models built with A26 engine
Hadley Smart Valve Troubleshooting Guide
Wabco OnGuard Software Update; Only 500k baud rate Units with Wabco OnGuard with Cummins Engines built before 9-24-2018.
The height control valve lower bracket may fail due to fatigue and may result in incorrect ride height and possible...
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driveline vibration.
Installing the Racor GreenMax Primary Fuel Water Separator in Place of the Davco 382; Only LT and RH Series built with...
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A26 engines
Under certain conditions, the Engine Control Module (ECM) calibration may not function properly and may result in a...
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Diesel Particulate Filter (DPF) overload condition and an increase in regulated air pollutants; only models with 2017 and 2018 MY A26 engine
Cummins X15, B6.7, L9 engine ECM Programming Procedure; only models built prior to June 4, 2018
Fuller Advantage Series Transmission Power and Ground; only models with A26 or Cummins X15 engines
Engine Emission Label Replacement, Certificate of Conformance and Clean Idle Sticker Addition Procedure
Wabco OnGuard Software Update; Only models with 500k baud and Wabco OnGuard with Cummins Engines built before 9-24-2018
Cummins X15, B6.7, L9 engine ECM Programming Procedure; only models built prior to June 4, 2018
ISB Starting System Diagnostics; Only models built with cummins ISB engines
Cummins ECM Programming Procedure; Only models with EPA 2017 Cummins engines
Engine Oil Capacities All Electronic International Engines 1994 - Present.
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Cummins ISB, ISM & ISX
Cummins ECM Programming Procedure; only models equipped with Cummins engines
Rocker Arm Inspection and Replacement Guidelines; only Engines built prior to 4-4-2018 with Engine Serial Number 4505507...
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and below
Engine Emission Label Replacement, Certificate of Conformance and Clean Idle Sticker Addition Procedure; only Navistar...
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Powered Trucks
Cummins ECM Programming Procedure; Only units equipped with Cummins engines
Hadley Smart Valve Troubleshooting Guide
Batt2 Load Shed Relay Failure; Only models without feature 16UZL - No Idle HVAC
Unable To Turn Steering Wheel With Engine At Idle Speed; only models equipped with Cummins X15 engine
Trailer Parking Brake / Hand Valve Routing; only models that do NOT have feature 004WDU (hand valve omit).
Engine Brake Retrofit; only models equipped with International A26 engine
Hard To Shift At Low Speed; models equipped with International A26 Engine, Standard Transmissions, and PTP ( Power Train...
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Protection) Enabled
Engine Oil Pressure Gauge Interaction During Cold Start; only models with International A26 engine
Urea Quality Sensor (UQS) Supplemental Diagnostic and Service Information; only models with SCR Aftertreatment system...
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and N9, N10, N13, A26 or Cummins ISB, ISL, ISX engines built from January 2016
A/C Concerns Leaks or Inoperative A/C; only LT Day Cab Models with Cummins X15 engine
The fire extinguishers may become clogged or require excessive force to activate.
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In certain models, the nozzle may detach from the valve assembly with enough force that it could cause injury and also render the product inoperable. Only equipped with Kidde model FC5 and FC10 fire extinguishers identified by International part numbers 1696423C2 and 1696423C3 and installed post production at Navistar?s Truck Sales Processing Center (TSPC).
Excessive Cab and Sleeper Temperature when NoIdle Heater is Operating; only models with feature code 16UZL
Eaton Transmission Stuck In Gear During 8 - 7 Downshift; only models with A26 or X15 engines and Eaton AMT (Automated...
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Manual Transmission)
Pilot Bearing Missing; only models with Cummins X15 engine
Excessive Cab and Sleeper Temperature when NoIdle Heater is Operating; Only models with feature code 16UZL
DAVCO Fuel Water Separator Conversion From Fuel Heated to Coolant Heated; only with A26 engine
Fuller Advantage Series Transmission Power and Ground; Only LT models with A26 or Cummins ISX engines and Fuller...
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Advantage Series Transmission
Engine Oil Capacities
CPA Injector Misfire Detection; Only models with 2004 thru 2017 International engines.
Cylinder Performance Analyzer (CPA) Resource Center; Only models with 2004 thru 2017 International engines.
The Auto Start-Stop function may have not been programmed in the Cummins ECM and, when activated, engine idle speed does...
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not increase and engine shuts down after 5 minutes of idle.
Other
101 bulletinsSome interaxle shafts (the driveshaft connecting 2 drive axles) utilize special phasing.
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This is by design to reduce torsional vibrations. See Dana/Spicer letter here & Meritor here.
This document will guide the user through troubleshooting steps to submitting a case file for a horsepower request.
The purpose of this article is to describe all aspects of the A26 Connecting Rod Replacement Repair Processes.
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To address an A26 connecting rod supplier quality spill, Navistar is streamlining quality repair strategies to help avoid customer disturbance. Navistar is implementing connecting rod replacements which results in less downtime and damage avoidance.
This document will guide the user through understanding Prop Shaft Codes and understanding the variations of prop codes.
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(Metric Prop codes start with the number a 4 and Non metric Prop codes start with a 2.)
Title: Driveline Information Center and Troubleshooting Procedures Applies To: All Vehicles
Title: Fan belt replacement guidelines for frayed edges Applies To: All Models
Title: Parameters for 16UZL with 16VKW Applies To: Vehicles with both feature codes 16UZL and 16VKW
Switch Pack Programming Troubleshooting Information
Title: Connecting an Auxiliary APU to the S13 Coolant System
Title: Supplemental A26 MAF Fault Diagnostics
This document is used to help guide through fault codes.
This document will guide the user how to addresses chassis lean conditions on all chassis.
This document will provide the user with cleaning options and procedures for aluminum bright work parts that become...
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stained or tarnished.
The purpose of this article is to describe all aspects of the A26 connecting rod replacement repair processes.
J1939 Data Link Source Address Information
Diagnosis of chassis wander complaints.
J1939 Data Link Source Address Information
J1939 Data Link Troubleshooting
Auto Start Stop Information and troubleshooting; Only LT with feature code 08TSJ
Telematics installation guidelines - Only units with 500K data link
J1939 Data link source address information
Pico Scope CCOS (Crankcase Separator Test)
LT A26 Cold Side CAC Hose Rupture
PicoScope Test One Channel RCT
PicoScope Test Resistance and Ohmmeter
PicoScope Test for Datalink (CAN) Health Shorts & opens
Side mounted cab extender fins that provide more flexibility during trailer contact.
J1939 Data Link Source Address Information
J1939 Data Link Troubleshooting
How to obtain As built parameter list
SiriusXM Reception Issues with Film Antenna in Hi-Rise Sleeper
Cab Lean Concern
Driveline Information Center and Troubleshooting Procedures
Dielectric Grease Change
Cleaning and Disinfecting Trucks and Buses
J1939 Data Link Troubleshooting
LT Charge Air Cooler Hose Identification
LT RH HV MV Wire Terminal Information
LT CRX50 Refrigerator Diagnostics.
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Only models Equipped with the CRX50 Refrigerator
LT A26 Cold Side CAC Hose Rupture
J1939 Data Link Source Address Information
SCR Vehicles Setting DEF Quality Faults due to Crossed DEF Tank Coolant Lines or Inverted DEFTHV
City Horn Difficult to Active
Wire Terminal Information
LT; Grille Chrome Plating Delamination
Only models built with Cummins X15; Fault Code 7125
vibration at highway speeds; only vehicles with low miles
Child Checkmate is not functioning correctly; Only buses with features 47EXC, 47EXD, 47EXE built from 4/18/16 to 5/15/17
Auto Start Stop Information and Troubleshooting; only models with feature code 08TSJ
Driveline Information Center and Troubleshooting Procedures
Child Checkmate is not functioning correctly; Only buses with features 47EXC, 47EXD, 47EXE built from 4/18/16 to 5/15/17
Auto Start Stop Information and Troubleshooting; only models with feature code 08TSJ
Hendrickson Assembly Instructions; Transverse Torque Rods
Wire Terminal Information
Telematics Installation Guidelines; only Units with 500K Data Link
vibration at highway speeds
vibration at highway speeds; only with low miles
Wire Terminal Information
Vibration at highway speeds; Only units with low mileage
Telematics Installation Guidelines; Only units built with 500K baud rate data link
Vibration at highway speeds
LT Keys and Key Codes
Refrigerator Diagnostics; only models Equipped with the CRX50 Refrigerator
vibration at highway speeds; only vehicles with less than 4,000 miles
Air Deflector / Fairing Vibration at Highway Speeds
Power Divider Leaking at Axle Housing; only models with Meritor Drive Axles
Auxiliary Switch Not Working; Only models with feature 08XBN
Loose Ground Cable
Cab Lean Concern
Wire Terminal Information
NEW Ultrasonic DEF Tank Sending Unit; only models with SCR Aftertreatment system.
During certain geographic conditions the Predictive Cruise Control may revert back to the standard cruise control.
Auto Start Stop Troubleshooting; only LT and ProStar with feature code 0008TSJ
LT and RH Premium Electronic Gauge Cluster Needle May Contact Graphic
J1939 Data Link Troubleshooting
SCR Vehicles Setting 3363-16 (FC1713) due to Crossed DEF Tank Coolant Lines or Inverted DEFTHV
CRX50 Refrigerator Diagnostics; only models Equipped with the CRX50 Refrigerator
vibration at highway speeds; only models with less than 4000 miles
Bunk Curtain Falling Off Track Sky-Rise
Cooling System Flush Procedure
LT Keys and Key Codes
J1939 Data Link Source Address Information
J1939 Data Link Troubleshooting
Updating OnCommand Link with Accelerator
OnCommand EZ-Tech
vibration at highway speeds
Winter Front Usage
ISX, N13, and N9 / N10 Aftertreatment Private Data Link Troubleshooting
Dielectric grease change
Instrument Cluster Relearn Procedure; All units that have just completed AFC 17904 - 17917
Power & Ground Locations
J1939 Data Link Troubleshooting
Broken Tailpipe Bracket; only models with Feature Code 0007BKR
Detecting and repairing a loose ground terminal.
part numbers and quantities required to install feature codes 16VJY and 16VGN (TV Bracket).
Telematic Installation Guidelines; only Units with 500K Data Link
Auxiliary Switch Not Working; only models with feature code 08XBN
OnCommand EZTech
OnCommand EZ-Tech Download Center
LT and RH Premium Electronic Gauge Cluster Needle May Contact Graphic
Chrome Grill Deformation; only vehicles built: 01/02/2017 through 02/18/2017
Electrical
49 bulletinsThis document provides: Steps to take when switch pack programming fails, or when switch pack disappears after body...
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control module update Sample scenarios Additional information to assist readers in understanding DLB switch pack programming
Title: Battery Disconnect Switch Replacement - Best Practices Applies To: All Models with Battery Disconnect Switch
This document details the procedure that must be followed to ensure proper alternator troubleshooting.
This document covers battery diagnostics, maintenance and storage requirement.
LT & RH aftertreatment PDM F2 fuse falling out or cracking.
Aftertreatment PDM F2 fuse falling out or cracking.
Corroded TPMS Receiver / Repeater Module Connectors; only models equipped with feature code 16VLS or 16VVM
General Wheel Speed Sensor Troubleshooting
Fifth Wheel Unlock - Trailer Lamp Detection Calibration.
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Only models equipped with BCM feature code 597017
LT Truck headlight harness inspection and repair; only units built prior to 04/11/2022
PicoScope Wheel Speed Sensor Test
PicoScope Test - Battery Loss of Charge - Parasitic Draw Test
PicoScope Test 5V & 12V Intermittent Open and Short circuit diagnostics
New or replacement body control Module (BC,BCM) not detected; Gen 4 BCM
General wheel speed sensor troubleshooting
Ambient Air Temperature (AAT) Sensor Faults/Location/Diagnostics
Multi Module Programming Information for In-Cab Modules
Multi Module Programming Information for In-Cab Modules
Ambient Air Temperature (AAT) Sensor Faults/Location/Diagnostics
Multi Module Programming Information for In-Cab Modules
Multi Module Programming Information for In-Cab Modules
Certain LT Series and ProStar trucks equipped with feature codes 0016VKW and 08TSJ (Auto Start / Stop and Climate...
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Control) may experience a starter no-crank condition in auto start operation.
Starter power connection cleaning
Build to VIN Wiring Harnesses
Starter power connection cleaning
Build to VIN Wiring Harnesses
Tool Instruction - BCM Programming Harness
Body Builder Accessories Backfeeding Ignition Voltage
Multi Module Programming Information for In-Cab Modules
Batt2 Load Shed Relay Failure / Diagnostics
Starter programming update; only LT with Auto Start Stop
Multi Module Programming Information for In-Cab Modules
Build to VIN Wiring Harnesses; Axle Configuration: 6x4
Starter power connection cleaning
Multi Module Programming Information for In-Cab Modules
Battery drain E-Fix Resolution
Cluster and Module Programming Information
Cluster and Module Programming Information
HVAC fault 2609-19 with 4th Gen BCM; Only models equipped with 4th generation BCM
Radar Sensor Interference w/rock screen/shield; only models with collision avoidance feature codes 08TPL.
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08TPU, 08TUE
Urea Quality Sensor (UQS) Boot Order
Battery box harness rub; only models with Feature code 08XHH BTR Battery box
Cluster and Module Programming Information; module kernel update with DLB
Multi Module recalibration, Battery Interconnect Cables / uptime improvement
Multi Module recalibration, Bumper Rock Screen, Battery Interconnect Cables / uptime improvement
Multi Module recalibration, Bumper Rock Screen / uptime improvement
Multi Module recalibration / uptime improvement
Urea Quality Sensor (UQS) Boot Order
The cruise control Cancel button may have not been programmed in the Cummins ECM and, when pressed, the cruise control...
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does not disengage.
Body & Paint
42 bulletinsIn some instances, the driver's or passenger's door pod may become unresponsive, where it will not respond to any manual...
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inputs from the driver or passenger. In some of these situations, it is possible for this symptom to be present without any fault codes becoming active. This article will guide the user through performing a hard reset of a door pod, which can restore the door pod to its operational condition, thereby avoiding the need for replacement. The steps in this article should be performed BEFORE diagnostics are completed for any active faults.
This article addresses chassis lean conditions on all chassis.
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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.
Hood guide installation
Cab water leak trouble shooting tips
Primer recommendation for matching textured panels to smooth panels for field repairs
Textured surfaces on painted plastic bumpers, chassis side skirts, and fender extendtions
Water leaks past plastic vapor barrier sheet in the inner cavity of the cab entry door
Cab water leak troubleshooting tips; HX with steel cab only
Cab water leak troubleshooting tips
Aftertreatment Clamp Corrosion; Single Can Aftertreatment Systems
Day cab roof air deflector causing loud vibration noise at highway speed
Sleeper bunk cabinet door latch installation and adjustment
Programming Procedure for Center Panel Switch Packs
Programming Procedure for Center Panel Switch Packs
Programming Procedure for Center Panel Switch Packs
Programming procedures for the center panel switch packs has changed.
Windshield Replacement on trucks equipped with Lane Departure Cameras; Only RH, LT, and Medium duty with feature codes...
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008TTG, 0008TPU, 0008TTT, 0008TTU
Day Cab Roof Air Deflector Vibrates against Cab Roof; only models with P/N 4067947C92 Roof Air Deflector
Water Leaks Past Plastic Vapor Barrier Sheet in the Inner Cavity of the Cab Entry Door
Wind noise at upper side of cab door due to door out of alignment
Cab Door Latch Stuck, Door will not open
Body Controller Updates for 500k Baud Data link
Cab Door Latch Stuck, Door will not open
Cab Water Leak Troubleshooting Tips; Excluding 9000i, PayStar(HX), CityStar, or LoadStar
The First Check to make when Troubleshooting any Body Controller or ESC Issue
Chrome Door Mirror Glare; only models built February 2019 and prior
Body Controller Updates for 500k Baud data link
Heated Mirror Timer Programmable Parameter; only models with feature code 0597006 and built prior to January 23, 2019
Loose, Missing, or Damaged Glass in the Hood Mounted Mirror
Loose, Missing, or Damaged Glass in the Hood Mounted Mirror; Only LT model trucks
Hood Gap and Alignment Tolerances
Bunk Cabinet Door Latch Installation
Bunk Cabinet Door Latch Installation
LT Door Mirror Glare; only with Chrome Door Mirrors
Hood Crack by Grille
Windshield Replacement on trucks equipped with Lane Departure Cameras; Only models with one of the following feature...
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codes 008TTG, 0008TPU, 0008TTT, 0008TTU
Loose or Missing Glass in the Hood Mounted Mirror
Door Mirror Glare; only models with Chrome mirrors
Loose or Missing Glass in the Hood Mounted Mirror
Front Bumper Rock Guard Corrosion
Door Mirror Glare; only with Chrome Door Mirrors
Hood Glare
Transmission
19 bulletinsThis document is to notify the field of an issue with BCM that causes various electrical system concerns after the vehicle sits for 2-3 days.
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This can affect all LT, RH, MV, HV models, 2021MY and up HX, 2024MY and up CE Bus with BCM kernel version 752, 753, and 754. Vehicles built or updated with DLB between 6/1/25 and 11/4/25 are suspected of having these kernels installed on the BCM. The most common complaint is that the steering wheel switches do not function, which, depending on the vehicle model and options, can cause the bus door, pupil warning lights, radio controls, marker interrupt, and cruise control to stop working. Other complaints can include short circuit faults from multiple sensor circuits attached to the BCM setting at the same time, the vehicle will not go into gear, the headlights are stuck on, the brake lights are stuck on, or the parking brake alarm is sounding (horn chirping) with the parking brake set. As of 11/4/25, these symptoms can be resolved by updating the BCM to kernel 755 or later with DLB.
Title: S13 Gear Housing Leak (By The Air Compressor) Applies To: S13 Integrated Powertrain LT RH HX
Title: Steering Gear Seal Repair Guidelines Applies To: Steering gears
Power Steering Diagnostics Flow / Pressure Specifications For Power Steering Gears and Power Steering Pumps
Power Take Off (PTO) Programming on LT, RH and LoneStar Models with the Eaton Endurant Transmission; only models with...
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feature code 13GZD, 13GYY, 13GYZ, 13GZA, 13GZB, or 13GZC
Fuller Advantage Series Transmission Power and Ground
LT, RH- Hydraulic Clutch Routing and Clipping
LT with Fuller Advantage Series Transmission Power and Ground
Power Take Off (PTO) Programming on Models with the Eaton EndurantTransmission; only with feature codes 13GZD, 13GYY,...
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13GYZ, 13GZA, 13GZB, or 13GZC
Hydraulic Clutch Diagnostic & Service Information
Transmission Stuck In Gear (mis-shift) During 8 - 7 Downshift, Only models with with Eaton EN3, EC3, or EA3 Automated...
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Manual Transmissions
Ultrashift 1321-14 Missing Wire for Crank Signal Feedback; Only models with Ultrashift transmission
LT Fuller Advantage Series Transmission Power and Ground
Ultrashift 1321-14 Missing Wire for Crank Signal Feedback; only models with Ultrashift transmission
LT Hydraulic Clutch Diagnostic & Service Information; only models Equipped with a Manual Transmission and Eaton...
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Advantage Solo Self-Adjusting Clutch
Hydraulic Clutch Diagnostic & Service Information; only models with a Manual Transmission and Eaton Advantage Solo...
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Self-Adjusting Clutch
Loss of power and ABS light iluminated on units equipped with Meritor Wabco?s electronic HSA and Eaton transmission;...
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only models with Wabco Electronic HSA 04AZX, and Ultrashift 13GXK
Transmission Power and Ground; only models with Eaton Fuller Advantage Series Transmission
The transmission TCM may have been programmed incorrectly during vehicle assembly.
Fuel System
12 bulletinsThis document will guide the user through supplemental fuel system diagnostics on 2017 A26 ESN 4500000 - 4599999.
Title: Export Recalibration Process & Emissions Label - A26 Applies To: Service Manager, General Manager, Technicians.
A26 & S13 Fuel Gelling
Winter Fuel Or Additive Use Required Pop-Up Message
LT / ProStar Fuel Tank Unable to Fill; only sleeper models
LT / ProStar Fuel Tank Unable to Fill; only sleeper models
The rear exhaust hanger bracket may crack and over time, may cause the forward hanger bracket to crack and in some cases...
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may result in partial or full separation of the exhaust tail pipe from the vehicle; only models with 73 inch sleeper cab and feature code 07BKP or 07BKR (Exhaust system with horizontal aftertreatment devise and horizontal tailpipe mounted on right side).
Identifying customer HVAC performance concerns / Evaporator Freeze up
Cummins L9 EPA 17 Supplemental Fuel System Diagnostics - Racor Chassis Mounted Fuel Filter / Cummins fault 559
Evaporator freeze up; only models built before 5/25/18
Fuel Tank Unable to Fill; only sleeper models
Premium Electronic Gauge Cluster in LT and RH Fuel and DEF Distance to Empty; only models equipped with Premium...
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Electronic Gauge Cluster
HVAC & Climate
11 bulletinsTitle: A/C Refrigerant and Oil Capacities Applies To: All current models
A/C Refrigerant and Oil Capacities
A/C Condensers for LT and RH Part Number Update
A/C Refrigerant and Oil Capacities
Espar Airtronic Heater Diagnostic Guide; only models with Feature code 16VTV
HVAC Performance Concerns; Only day cab models
LT Day Cab A/C Concerns Leaks or Inoperative A/C
A/C Condenser Part Number Update for LT and RH
HVAC Performance Concerns; only day cab models
LT Day Cab A/C Concerns Leaks or Inoperative A/C
A/C Refrigerant and Oil Capacities
Steering
11 bulletinsTitle: S13 New Power Steering Tube Support Brackets
Steering Shake, Shimmy, Shudder, Wobble, Steering Vibration; only models built with 14K weight rated axles or lower
Steering Shake, Shimmy, Shudder, Steering Vibration; Only ProStar / LoneStar and LT / RH with 14k front weight rated...
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axles and below
Steering Shake, Shimmy, Shudder, Steering Vibration.
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Only models with14k front weight rated axles and below
Steering intermittently goes into a shimmy after hitting a bump.
Steering Shake, Shimmy, Shudder, or Steering Vibration; only with 14k front weight rated axles and below
Steering Shake, Shimmy, Shudder, Steering Vibration; only models with 14k front weight rated axles and below
Steering Shake, Shimmy, Shudder, Steering Vibration; only models with 14k front weight rated axles and below
Vibration at highway speeds felt in seat, floor, or steering wheel
Steering Fluids
Steering Shake, Shimmy, Shudder, or Steering Vibration; only with 14k front weight rated axles and below
Infotainment
10 bulletinsThis tool is designed to compare Diamond Logic feature data across multiple vehicle configuration files.
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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.
Radio Diagnostics and Information
Driver Information Display (VIS/DID) screen fails to boot up.
NEW Ultrasonic DEF Head Unit; All SCR vehicles
NEW Ultrasonic DEF Head Unit available; Only models equipped with SCR Aftertreatment.
NEW Ultrasonic DEF Head Unit; Only vehicles Equipped with SCR
NEW Ultrasonic DEF Head Unit; only models equipped with SCR Aftertreatment
NEW Ultrasonic DEF Head Unit
Radio Diagnostics and Information
Information Display won't boot up
Brakes
9 bulletinsThis document will guide the user through a step-by-step procedure for detecting water leaks in vehicle cabs and...
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windshields using an ultrasonic sound detector.
This document is to guide users to eliminate brake pedal rattle noise.
Horizon Cab Door Field Replacement and the Side Window Air Deflectors.
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NOTE: This article will only be applicable to cabs with the deflector mounted on the door pillar. If the cab has the deflector at the windshield, this article does not apply.
Bendix EC80 Blank Module Replacement Program; This document will guide the user through selecting the correct ABS module...
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when it has been determined a replacement is needed. Only Models with EC-80 ABS Controller
Brake pedal not returning and sticking slightly in the applied position
Brake pedal not returning and sticking slightly in the applied position
Cab Water Leak Troubleshooting Tips; primarily for Sleeper cab models and some aspects may also apply to all cabs...
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excluding 5000,9000, PayStar, cityStar
Brake Chamber Contacting IROS Suspension; only models with IROS suspension
The air dryer mounting bracket may fracture, which could cause the air dryer to separate from the vehicle frame with...
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possible airline separation from the dryer, resulting in air system leaks or loss of air pressure to the brake system.
Tires & Wheels
7 bulletinsTire Pressure Monitoring systems (TPMS); Only LT, RH, HV, HX, or MV series trucks with feature code 16VLS, 16VUY,...
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16VVA,16VUZ, or 16VVM
Cab Components That Reduce Wheel End Vibration Complaints
Cab Components That Reduce Wheel End Vibration Complaints.
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NOTE: Lonestar Day Cab Only
Feature 16VLS Tire Pressure Maintenance System (TPMS)
Suggested alignment target values when performing a vehicle axle alignment
FLR-10 Bendix Wingman Misalignment Issues; only models with Feature Code 08TKY Wingman FLR-10 Radars
Fifth Wheel Jaw Unlock; only models with Feature 595BAW or 597017 - electronic Jaw release
Lighting
7 bulletinsLane Departure Warning Alert Active with Turn Signals On; Only models equipped with Lane Departure Warning
Repair Procedures for Vehicles Struck by Lightning
Electronic Gauge Cluster Warning Lights in LT and RH After Cluster Replacement; only built without Electronic Stability...
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Control Cluster
Electronic Gauge Cluster Warning Lights in LT and RH
Incorrect warning lights illuminating after the Electronic Gauge Cluster (EGC) has been programmed; only models with...
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base cluster feature codes 0016GDC; 0016GDD; 0016GDE and with DLB feature code 0597177
Trailer Auxiliary Switch Lamp Burning Out; Only Vehicles Equipped with Feature Code 0008TTH or 0008THG
Electronic Gauge Cluster Warning Lights in LT and RH
Suspension
6 bulletinsThis document reminds technicians of the critical relationship between the truck's suspension and the driveline operating angles.
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The information applies to diesel, gas, and electric vehicles.
Suspension Lean Diagnostics; All models
Cab Suspension Air Bag Lean
Cab Suspension Air Bag Lean
Improved Bushings for Hendrickson Torque Rods
Fan hub bracket bolts loose or missing; only with fan drive feature code 12THT or 12TKY
Software & Calibration
5 bulletinsUpdate to International Preventative Maintenance
QLS Emergency Calibration Revert Process
Controller Updates for 500k Baud; only vehicles with 500k baud data link
Using Supplier Software to Check DTCs
Dealer EZ-Tech and Diagnostic Software Support Resource Center
Pre-Delivery & Maintenance
2 bulletinsTitle: Service Portal iKNow Feedback Case Types Applies To: All
Frame Rail Straightness Inspection Procedure
Hybrid & EV
1 bulletinThis document will guide the user through reviewing a regeneration file, confirming it was completed properly, and...
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determining what may be keeping it fromcompleting properly.