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.
IB26-J-003
INFORMATION BULLETIN: TECHNICIANS MAY ENCOUNTER DTC U0101 (00) LOST COMMUNICATION WITH TRANSMISSION CONTROL MODULE (TCM) STORED IN THE ELECTRONIC HYDRAULIC CONTROL UNIT (EHCU) AS A HISTORY CODE. WHEN AN IDLE SHUTDOWN EVENT OCCURS, COMMUNICATION BETWEEN THE TCM AND THE EHCU IS TEMPORARILY SUSPENDED. THIS CAN CAUSE DTC U0101 (00) TO SET IN THE EHCU ALTHOUGH THERE IS NO FAULT IN THE SYSTEM.
IB19-R-002C
INFORMATION BULLETIN: THIS BULLETIN OUTLINES THE PROCEDURES FOR USING THE MOBILEYE EXCHANGE PROGRAM. REPLACEMENT MOBILEYE 8 COMPONENTS CAN BE OBTAINED FOR VEHICLES THAT QUALIFY UNDER THIS EXCHANGE PROGRAM.
IB09-N-001I
INFORMATION BULLETIN: THE INFORMATION SET FORTH IN THIS BULLETIN IS INTENDED TO AID TECHNICIANS IN PROPERLY TESTING THE BATTERIES AND ALTERNATORS IN THE AFFECTED ISUZU VEHICLES. IT IS IMPORTANT TO CONFIRM THE BATTERY IS IN GOOD CONDITION PRIOR TO DIAGNOSIS OF THE ALTERNATOR AND CHARGING SYSTEM. NEVER REPLACE AN ALTERNATOR BEFORE TESTING THE BATTERY’S CONDITION.
SB22-J-002A
SERVICE BULLETIN - THE PURPOSE OF THIS BULLETIN IS TO DESCRIBE DIFFERENT INSTANCES WHERE OIL CONSUMPTION OCCURS AND TO MAKE AVAILABLE A WORKSHEET TO ASSIST THE TECHNICIAN IN DETERMINING IF OIL CONSUMPTION IS EXCESSIVE. OIL USAGE HAS A DIRECT RELATIONSHIP WITH THE AMOUNT OF FUEL USED. THE HARDER AN ENGINE WORKS, THE MORE FUEL AND OIL IT WILL USE. THEREFORE, OIL USAGE AS A FACTOR OF FUEL USAGE IS A MORE ACCURATE INDICATOR OF ACCEPTABLE OIL CONSUMPTION. THE ACCEPTED RATE OF OIL CONSUMPTION FOR THE AFFECTED VEHICLES IN THIS BULLETIN IS 0.946 LITER (1 QT) WITHIN 379 LITERS (100 GALLONS) OF FUEL USED. THIS RATE ONLY APPLIES TO VEHICLES UNDER WARRANTY, MAINTAINED IN ACCORDANCE WITH THE APPROPRIATE MAINTENANCE SCHEDULE, DRIVEN AT LEGAL SPEEDS AND WITHIN DESIGN INTENT OF THE VEHICLE. MANY FACTORS CAN AFFECT AN OWNER'S CONCERN WITH OIL CONSUMPTION. DRIVING HABITS AND VEHICLE MAINTENANCE VARY FROM OWNER TO OWNER. THOROUGHLY EVALUATE EACH CASE BEFORE DECIDING WHETHER THE VEHICLE IN QUESTION HAS ABNORMAL ENGINE OIL CONSUMPTION.
IB24-R-001a
INFORMATION BULLETIN - UPDATED BULLETIN OUTLINES THE SERVICE PROCEDURES FOR DIAGNOSIS AND PARTS INFORMATION FOR REPAIR OF THE MOBILEYE 6 SYSTEM.
IB16-F-001E
INFORMATION BULLETIN: SOME CUSTOMERS WITH N-SERIES VEHICLES MAY NOTICE AN AUDIBLE CLICKING OR CHATTERING NOISE COMING FROM THE REAR OF THE VEHICLE WHILE MAKING TIGHT TURNS. THIS CONDITION MAY BE DUE TO LIMITED SLIP DIFFERENTIAL LUBRICANT ADDITIVE NOT HAVING BEEN USED DURING THE LAST SCHEDULED MAINTENANCE OR IN A PREVIOUS REPAIR. THE CONDITION CAN ALSO RESULT FROM DELAYED OR SKIPPED MAINTENANCE RESULTING IN DEGRADATION OF AXLE FLUID. IF A CUSTOMER BRINGS AN AFFECTED VEHICLE IN AND COMPLAINS OF OR DESCRIBES THIS CONDITION, FOLLOW THE SERVICE PROCEDURE.
IB08-X-002J
INFORMATION BULLETIN: CLEAN IDLE LABEL REPLACEMENT PROCEDURES
IB09-N-001H
INFORMATION BULLETIN: THE INFORMATION SET FORTH IN THIS BULLETIN IS INTENDED TO AID TECHNICIANS IN PROPERLY TESTING THE BATTERIES AND ALTERNATORS IN THE AFFECTED ISUZU VEHICLES. IT IS IMPORTANT TO CONFIRM THE BATTERY IS IN GOOD CONDITION PRIOR TO DIAGNOSIS OF THE ALTERNATOR AND CHARGING SYSTEM. NEVER REPLACE AN ALTERNATOR BEFORE TESTING THE BATTERY’S CONDITION. BATTERIES MUST BE FULLY CHARGED FOR THE ECM AND/OR STARTER RELAY TO FULLY ENGAGE WITH THE STARTER. IF THE BATTERY VOLTAGE IS LOW, THE ECM WILL NOT ENGAGE OR MAY PARTIALLY ENGAGE THE STARTER. REPLACE THE ALTERNATOR ONLY IF IT FAILS THE ON VEHICLE TESTING PROCEDURE.
IB19-K-002A
THIS INFORMATION BULLETIN OUTLINES THE SERVICE PROCEDURE FOR INSTALLATION OF FLUID LEVEL INDICATOR JOINT TUBE ANYTIME THE AISIN TRANSMISSION IS REMOVED OR OIL PAN IS REMOVED AND REINSTALLED TO PREVENT WATER INTRUSION TO TRANSMISSION.
IB19-R-002B
THIS INFORMATION BULLETIN OUTLINES THE PROCEDURES FOR USING THE MOBILEYE EXCHANGE PROGRAM. REPLACEMENT MOBILEYE 8 COMPONENTS CAN BE OBTAINED FOR VEHICLES THAT QUALIFY UNDER THIS EXCHANGE PROGRAM.
IB24-R-001
THIS INFORMATION BULLETIN OUTLINES THE SERVICE PROCEDURES FOR DIAGNOSIS AND PARTS INFORMATION FOR REPAIR OF THE MOBILEYE 6 SYSTEM. FIGURE 1 BELOW IS AN EXAMPLE OF THE CAMERA USED ON A MOBILEYE 6 SYSTEM. THE PROCEDURE DISCUSSED IN THIS BULLETIN MUST BE USED FOR REPAIRING ANY MOBILEYE 6 SYSTEM.
IB15-X-001C
THIS INFORMATION BULLETIN IS TO REMIND DEALERS WHENEVER THE IPC ASSEMBLY IS REPLACED IN AN AFFECTED ISUZU MANUFACTURED VEHICLE, THEY ARE TO AFFIX AN ODOMETER REPLACEMENT STICKER, AS THE ODOMETER IS NOT PROGRAMMABLE. THE STICKER SHOULD BE FILLED OUT COMPLETELY WITH THE DATE OF REPLACEMENT ALONG WITH THE MILEAGE FROM THE PREVIOUS ODOMETER READING, AND THE DEALER CODE OF THE DEALERSHIP REPLACING THE IPC.
IB18-X-002F
INFORMATION BULLETIN: THIS BULLETIN APPLIES TO ALL OEM AND REMANUFACTURED ENGINE AND TRANSMISSION ASSEMBLIES, FOR THE AFFECTED VEHICLES LISTED ABOVE, TO BE REPLACED UNDER THE ISUZU NEW VEHICLE WARRANTY, GOODWILL, ISUZU PARTS WARRANTY, GOLD STAR USED TRUCK WARRANTY AND/OR ALL EXTENDED POWERTRAIN WARRANTIES OFFERED BY ISUZU, AS WELL AS ALL OVER-THE-COUNTER ENGINE AND TRANSMISSION ASSEMBLY REPLACEMENTS.
IB24-L-001
INFORMATION BULLETIN: ISUZU DEALERSHIP PERSONNEL SHOULD ENCOURAGE ISUZU CUSTOMERS TO FOLLOW THE FUEL SYSTEM INFORMATION OUTLINED IN THE FUEL SECTION OF THEIR VEHICLE’S OWNER’S MANUAL. RUNNING AN ENGINE WITH GASOLINE CONTAMINATION MAY LEAD TO DAMAGE TO THE FUEL SYSTEM AND/OR CATASTROPHIC ENGINE DAMAGE. PROTECT YOUR CUSTOMER’S ENGINE FROM CONTAMINATED GASOLINE BY RECOMMENDING REGULAR FUEL SYSTEM INSPECTION AND MAINTENANCE.
IB16-F-001D
INFORMATION BULLETIN _SOME CUSTOMERS WITH N-SERIES VEHICLES MAY NOTICE AN AUDIBLE CLICKING OR CHATTERING NOISE COMING FROM THE REAR OF THE VEHICLE WHILE MAKING TIGHT TURNS. THIS CONDITION MAY BE DUE TO LIMITED SLIP DIFFERENTIAL LUBRICANT ADDITIVE NOT HAVING BEEN USED DURING THE LAST SCHEDULED MAINTENANCE OR IN A PREVIOUS REPAIR. THE CONDITION CAN ALSO RESULT FROM DELAYED OR SKIPPED MAINTENANCE RESULTING IN DEGRADATION OF AXLE FLUID.
CB24-L-001
CUSTOMER SATISFACATION CAMPAIGN_ ISUZU HAS DETERMINED THAT CERTAIN 2022 – 2024MY ISUZU N-SERIES VEHICLES EQUIPPED WITH 5.2L (4HK1) DIESEL ENGINES AND OPTION (IE1) 4-WHEEL DISC BRAKES WERE BUILT WITH AN ENGINE CONTROL MODULE (ECM) AND DIESEL EXHAUST FLUID CONTROL UNIT (DCU) CONTAINING AN ON BOARD DIAGNOSTIC (OBD) CALIBRATION ERROR FOR DIAGNOSTIC TROUBLE CODES (DTC) P2201 NOX SENSOR CIRCUIT PERFORMANCE SENSOR 1 AND P20EE DIESEL EXHAUST FLUID (DEF) SYSTEM NOX TRAP LOW EFFICIENCY.
IB24-K-001B
INFORMATION BULLETIN: Allison recently announced a new transmission fluid: TES 668. While Allison asserts this fluid is interchangeable with TES 295 for its transmissions, it is NOT interchangeable for all Isuzu vehicles. It is important to note that 2018 to 2023 Isuzu F-Series vehicles must USE ONLY the original TES 295 fluid. See Table 1 below for the correct application of TES 295 and TES 668 transmission fluids. Refer to the applicable Workshop Manual for additional information.
SB24-L-001
SERVICE BULLETIN: Some customers may experience an illuminated Malfunction Indicator Light (MIL) with DTC P20EE Diesel Exhaust Fluid (DEF) System NOx Trap Low Efficiency set without an apparent cause. New calibrations for the DEF Control Unit (DCU) have been developed to address this concern. Follow the diagnostic for this DTC. If no fault can be found when performing the normal diagnosis, follow the service procedure in this bulletin to reprogram the DEF Control Module.
WB11-X-001A
The following information is provided to clearly explain Isuzuâs policy for control module (engine, transmission, antilock brake, instrument panel, body control, power interface, etc.) reprogramming. Control module calibrations are regularly updated for many reasons. These reasons may include, but are not limited to: model year change, software corrections, certification compliance, product improvement and specific application requirements. However, the mere existence of a newer control module calibration does not necessarily mean that warranty coverage exists or that the calibration must be installed. It is not our policy to update control modules, under warranty or after warranty, based solely on the availability of a newer calibration file. Below are our guidelines for reprogramming control modules.
IB23-X-002
With the introduction of standard EVSC (Electronic Vehicle Stability Control) System, which includes ASR (Anti-Slip Regulation â i.e., TCS (Traction Control System)) and ESC (Electronic Stability Control) and optional ADAS (Advanced Driver Assistance System), which includes LDWS (Lane Departure Warning System), AEBS (Automatic Emergency Braking System) and ACC (Adaptive Cruise Control (2023 & 2024MY only)), we are providing the information below to educate technicians and service personnel about important service requirements and how to recognize the switches and Multi-information Display (MID) warnings and instrument panel warning and indicator lights these recently incorporated vehicle systems.
WB23-X-001
This bulletin provides information with regards to the Isuzu Commercial Vehicle (CV) Service Policies and Procedures Manual (SPPM). The Isuzu CV SPPM (sections 2.15 and 2.16) provides detailed procedures related to vehicle storage up to and beyond 30 days. Performing these required procedures at the specified intervals will properly maintain vehicles until they are retailed. Failure to follow the procedures outlined may result in repairs and additional costs that could have been avoided. We are providing dealers with this brief overview of the recommended procedures as a reminder to maintain older inventory. Failures resulting from improper, or lack of, storage procedures are not covered under the vehicle factory warranty.
IB18-N-003C
Isuzu Commercial Truck of America, Inc. is distributing this procedure for adding keyless entry transmitters as a quick reference to help dealers better service the customer. Also included is the clearing procedure for customers who have had transmitters lost or stolen. This procedure may be used to clear all transmitters from the Keyless Entry Control Unit.
WB13-X-002G
Isuzu is providing this bulletin to outline Isuzu's policy and procedures for Isuzu vehicles with Tire Warranty Coverage. NOTE: After the Isuzu Tire Warranty expires, additional coverage may be available from the tire manufacturer. Refer to the tire manufacturer's warranty booklet that was provided with the vehicle at the time of the sale.
IB18-X-001F
IDA is a diagnostic program that provides: 1. DTC Analysis 2. DPF Early Regeneration Warning Detailed instructions on how to use the IDA are included in this bulletin.
CB23-J-001B
CONDITION General Motors LLC, the manufacturer of the engine in your vehicle, has determined that certain 2020-2023MY N-Series vehicles produced from 8/26/2020 through 7/31/2022 and equipped with 6.6L (L8T) gasoline engines may experience water intrusion into the Mass Air Flow (MAF) sensor connector. If water intrudes into this connection, you may experience engine performance issues as well as setting the Check Engine Malfunction Indicator Lamp (MIL). CORRECTION Dealers will replace the MAF sensor and apply additional sealing tape to the MAF connection for waterproof protection on affected vehicles. This service will be provided free of charge.
IB13-R-001G
This bulletin outlines the procedures for using the Alpine Exchange Program (the "Exchange Program"). The Exchange Program must be used when any Alpine radio or other component covered by this bulletin is repaired under warranty and may also be used for radio and component repairs not covered under warranty. Contact Alpine directly for pricing and payment methods applicable to radio and component repairs not covered under warranty.
WB23-L-001
Isuzu Commercial Truck of America (ICTA) has been receiving warranty part returns that have aftermarket catalytic converters welded in place instead of the OEM catalytic converter. This is because vehicle owners who have had the OEM or Fleet Value catalytic converters stolen from their vehicles often replace the stolen catalytic converters aftermarket with non-Isuzu parts. When those replacement parts fail and cause the check engine light to illuminate, vehicle owners may seek to have the non-Isuzu replacement catalytic converter repaired or replaced under warranty. In fact, however, neither the new vehicle warranty nor the one-year replacement part warranty covers the failed non-Isuzu part.
IB18-X-001E
What is IDA? IDA is a diagnostic program that provides: 1) DTC Analysis: IDA analyzed DTCs (currently 35) and then provides quick and easy-to-understand repair solutions 2) DPF Early Regeneration Warning: IDA also reviews the three latest DPF regeneration odometer readings in the Health Report of the applicable VIN on IDA. IDA then analyzes the distances between the three regenerations. If the average of these distances is less than 55 km for a 4HK1 (5.2L) engine, or less than 70 km for a 4JJ1 (3.0L) engine, an alert will be shown on the IDA page in the form of a red regeneration icon. This is an early warning indication that a problem may be forming in the DPF regeneration cycle. However, if the enabling criteria shown above are not met, a regeneration icon will not appear on the IDA for that particular VIN. Detailed instructions on how to use IDA are included in this bulletin.
CB23-H-001A
Isuzu Motors Limited has decided that a defect, which relates to motor vehicle safety, exists in certain 2022-2023MY Isuzu N-Series Diesel Vehicles produced after 7/26/2021 with RPO Code EM2 or EL5 (200" or 212" respectively) Wheelbase Factory Modifications. When the subject vehicles were modified to extend the frame, the Anti-lock Brake System (ABS) module was not recalibrated to account for the different inputs from the vehicle resulting from the stretched frame. Therefore, when driving in a curve, the Electronic Stability Control (ESC) system, working together with the ABS, may react prematurely or be delayed in reacting, therefore increasing the risk of a crash. If the vehicle is equipped with the optional Advanced Driver Assistance System (ADAS), the ADAS camera was also not recalibrated to account for the different inputs from the vehicle resulting from the stretched frame. Therefore, when driving in a curve with the optional ADAS system activated, the Automatic Emergency Braking System (AEBS) and its accompanying warning light may be delayed in reacting and illuminating, also increasing the risk of a crash.
IB23-X-001
The information below is provided to help technicians better understand common vehicle operations that may be incorrectly perceived by customers as a problem.
CB23H001
Isuzu Motors Limited has decided that a defect, which relates to motor vehicle safety, exists in certain 2022-2023MY Isuzu N-Series Diesel Vehicles produced after 7/26/2021 with RPO Code EM2 or EL5 (200" or 212" respectively) Wheelbase Factory Modifications. When the subject vehicles were modified to extend the frame, the Anti-lock Brake System (ABS) module was not recalibrated to account for the different inputs from the vehicle resulting from the stretched frame. Therefore, when driving in a curve, the Electronic Stability Control (ESC) system, working together with the ABS, may react prematurely or be delayed in reacting, therefore increasing the risk of a crash. If the vehicle is equipped with the optional Advanced Driver Assistance System (ADAS), the ADAS camera was also not recalibrated to account for the different inputs from the vehicle resulting from the stretched frame. Therefore, when driving in a curve with the optional ADAS system activated, the Automatic Emergency Braking System (AEBS) and its accompanying warning light may be delayed in reacting and illuminating, also increasing the risk of a crash.
IB18-N-003B
Isuzu Commercial Truck of America, Inc. is distributing this procedure for adding keyless entry transmitters as a quick reference to help dealers better service customer. Also included is the clearing procedure for customers who have had transmitters lost or stolen. This procedure may be used to clear all transmitters from the Keyless Entry Control Unit.
SB22-L-001
The vehicle's Malfunction Indicator Lamp (MIL) may illuminate with DTC P22FB and/or P22FE set in the DEF Control Unit (DCU). If one or more of the preceding DTCs are present, first follow the diagnostic for the DTC(s) in question. If no mechanical fault can be found during normal diagnosis, follow the service procedure in this bulletin to correct the concern.
IB22-N-001
We have received reports of the front turn signal lenses cracking on Isuzu vehicles. These lenses are cracking from the effects of being washed with alkaline detergents. Alkaline detergents are typically used in industrial settings and are reactive with the paint, metals, and other materials used to make up the exterior components of Isuzu vehicles. Isuzu recommends that only neutral detergents be used when washing Isuzu vehicles. However, if alkaline detergents are used to wash an Isuzu vehicle, it is crucial that all traces of the detergent are rinsed away with water or wiped off as necessary. Allowing alkaline detergent to dry on the turn signal lenses will cause them to crack. Each Isuzu vehicle is originally equipped with an Owner's Manual that includes guidelines for the proper exterior maintenance of the vehicle. The following guidelines are typical of those found in an Isuzu Owner's Manual concerning the use of detergents on a vehicle's exterior.
SB22-J-002
All engines require oil to lubricate and protect the load bearing and internal moving parts from wear including cylinder walls, pistons, and piston rings. When a piston moves down its cylinder, a thin film of oil is left on the cylinder wall. During the combustion process, part of this oil layer is consumed. As a result, varying rates of oil consumption are accepted as normal in all engines. The purpose of this bulletin is to describe different instances where oil consumption occurs and to make available a worksheet to assist the technician in determining if oil consumption is excessive.
IB22-X-003
This bulletin outlines the diagnostic scan tool connection requirements to facilitate technicians' use of the tool on the 2023MY Isuzu N-Series Vehicles equipped with 6.6L Gasoline Engine.
IB16-F-001C
Some customers with N-series vehicles may notice an audible clicking or chattering noise coming from the rear of the vehicle while making tight turns. This condition may be due to incorrect axle fluid having been used during the last scheduled maintenance or in a previous repair. The condition can also result from delayed or skipped maintenance resulting in degradation of axle fluid.
WB13-X-001B
Isuzu Commercial Truck of America, Inc. (ICTA) is providing the following procedural recommendations to improve dealer efficiency when submitting Parts Warranty claims. We strongly recommend dealers follow these procedures in order to avoid delays in Parts Warranty claim payments and/or claim chargeback. This bulletin was revised to add a Parts Warranty Form
IB22-E-001
This bulletin is being written to inform technicians about the new Steering Angle Sensor in the affected vehicles and the importance of performing the relearn procedure after replacing the sensor or other steering related components that could cause the sensor angle to change. This sensor's position is initially learned by the Electric Hydraulic Control Unit (EHCU) during initial factory installation. The relearn procedure is done in order for the Electronic Stability Control and, if equipped, the Advanced Driver Assistance System (ADAS) to function correctly after steering wheel components (including but not limited to the Steering Angle Sensor) are replaced. If the sensor is replaced or if any component that affects the alignment of this sensor is replaced or adjusted, the Steering Angle Sensor position must be relearned by the EHCU. Below is a short list of components that, if replaced or adjusted, will require the Steering Angle Sensor to be relearned.
WB13-X-001A
Isuzu Commercial Truck of America, Inc. (ICTA) is providing the following procedural recommendations to improve dealer efficiency when submitting Parts Warranty claims. We strongly recommend dealers follow these procedures in order to avoid delays in Parts Warranty claim payments and/or claim chargeback.
IB09-X-002B
The following is a list of the Isuzu-recommended Threebond product part numbers identified in the various Isuzu Workshop Manuals and bulletins. If a Threebond product is unavailable, we recommend that you utilize the chart below to find equivalent of similar products (when available) from Loctite and Permatex.
IB09-X-004C
The Isuzu Commercial Truck of America (ICTA) Service Technical Assistance Center (TAC) provides diagnostic support to Isuzu dealer technicians repairing Isuzu vehicles in and out of vehicle warranty. A TAC case number will be issued solely for information tracking purposes and future contact reference.
WB13X002F
Isuzu is providing this bulletin to outline Isuzu's policy and procedures for Isuzu vehicles with Tire Warranty Coverage. Tire Warranty, Policy, Procedure, and Claim Submission are the categories in this bulletin.
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.