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.
CBR 159 202608
Service Bulletin/Repair Instructions
Mack Trucks Equipped With A Cummins Engine - Engine Preheat Icon Does Not Illuminate In The Instrument Cluster (IC) During Engine Pre-heat (Intake Air Heater) Operation - Vehicles With 2018Instrument Cluster Update, Model Year2018 And Newer
CBR 2595 072026
Service Bulletin/Repair Instructions
CBR - The purpose of this CBR is to provide information on 2010 and newer Mack Granite chassis experiencing a low frequency vibration.
CBR-2592-1 202606
Service Bulletin/Repair Instructions
The purpose of this CBR is to provide steps on how to correct a customer complaint of DTC P107B86 accompanied With intermittent loss of throttle.
CBR 2575-1 202604
Service Bulletin/Repair Instructions
CBR - Mack Chassis - Dash Panel Cracking at Mounting to BIW.
CBR 2362-3 202604
Service Bulletin/Repair Instructions
CBR - Mack Carrier Nut Adhesive Change.
CBR 2573-1 202604
Service Bulletin/Repair Instructions
CBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers.
CBR 2712-7 032026
Service Bulletin/Repair Instructions
CBR - No Start Condition After Over the Air Programing.
CBR 2218-6 032026
Service Bulletin/Repair Instructions
CBR - Parker F3 Hydraulic Pump Troubleshooting.
CBR 2246-5 032026
Service Bulletin/Repair Instructions
CBR - Z Spring Bracket Wear.
S4342 022026
Service Campaign
SC - Mack Trucks has determined that a select group of trucks were built with an AHI Module fuel pressure sensor which does not meet our specifications.
CBR 2432-2 202601
Service Bulletin/Repair Instructions
CBR - Mack Chassis - AN And GR Models - Door Glass Shattering.
CBR 2107-22 202601
Service Bulletin/Repair Instructions
CBR - Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions to US22+OBD2023 (DOES NOT APPLY TO AN(4) and PR(4)).
CBR 199 202512
Service Bulletin/Repair Instructions
Vehicles affected by this issue will show coolant runoff on the front rights side of the engine.
S4270 202512
Service Campaign
SC - Electric Exhaust Heater Control Unit Update
CBR 2171-11 202511
Service Bulletin/Repair Instructions
CBR - Mack Temperature Sensor Troubleshooting Guide
CBR 199-6 202511
Service Bulletin/Repair Instructions
CBR - 13 Liter Engines ONLY - Engine Coolant Pump Housing Leak; Coolant Found Around The Oil Cooler Duct Cover Or In Between The Coolant Pump Housing And Oil Cooler Housing.
CBR 2517-1 102025
Service Bulletin/Repair Instructions
CBR - Wiper Linkage Inspection.
S4632 102025
Service Campaign
SC - The vehicle’s seat belt tether may have been assembled with incorrect hardware.
CBR 2172-5 082025
Service Bulletin/Repair Instructions
CBR - When an OTA (Over-The-Air) job starts to program the VECU blocks the starter relay out, if the job ends in a Critical failure, the vehicle will remain in Safe State.
CBR 2488 072025
Service Bulletin/Repair Instructions
CBR - A significant GPS reporting issue is affecting fleet operations, with trucks maintaining back-office communication but failing to transmit GPS location data.
CBR 407 072025
Service Bulletin/Repair Instructions
CBR - To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP file will need to downloaded.
CBR 170-8 202505
Service Bulletin/Repair Instructions
Inactive Code P25AE00 Being Generated After A Hard Pull And A Momentary Drop In Engine Oil Pressure (Low Oil Pressure) (Possible Related Codes - SPN4811 , SPN 100 , PID 100)
CBR 2107-21 202505
Service Bulletin/Repair Instructions
Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions and Newer
CBR 901-5 202505
Service Bulletin/Repair Instructions
Remote Control Central Door Lock, Programming; Key Fob Cannot Be Programmed Or Does Not Work After Programming - Model Year 2018 And Newer
CBR 70-8 202505
Service Bulletin/Repair Instructions
Lack of lateral structural hood support.
CBR 2464-1 202505
Service Bulletin/Repair Instructions
Mack Chassis - Rear Axle Overheat
S4404 202504
Service Campaign
SC - Mack Trucks has determined that certain Anthem and Granite model trucks have a mislabeled Electronic Fuse & Relay Center (EFRC) Cover.
CBR-2452 202503
Service Bulletin/Repair Instructions
If the vehicle door is open and the truck is in neutral, a popup message may appear on the Driver Information Display (DID) instructing the operator to shift into neutral. If this message appears while the vehicle is already in neutral, the Instrument Cluster (IC)requires a software update.
CBR-561 202503
Service Bulletin/Repair Instructions
If oil dilution is suspected refer to the applicable CBR solution below: ∙ CBR-659Mack Chassis - Oil Diluted With Fuel; Fuel In Oil, Diagnostic Information - All Emissions, All Model Years
S4342-202502
Service Bulletin/Repair Instructions
Mack Trucks has determined that a select group of trucks were built with an AHI Module fuel pressure sensor which does not meet our specifications.
CBR-2432 202501
Service Bulletin/Repair Instructions
This CBR solution provides detailed instructions for diagnosing and addressing window glass shattering issues, including replacement specifications, interference checks, fastener verification, and reinforcement tab adjustments to ensure proper installation and functionality.
CBR-2016 202412
Service Bulletin/Repair Instructions
Frame lean can be caused by several seemingly isolated possibilities. The two most common are suspension and frame assembly issues.
S4309 202412
Service Campaign
Mack Trucks has identified that certain GR model trucks may encounter an issue with the EECU during a shutdown event. If this occurs, the EECU could become corrupted, leading to multiple fault codes, engine derate, and, in some cases, preventing the truck from starting. For vehicles within the affected population, please follow the instructions below to program the EECU.
CBR-997 202411
Service Bulletin/Repair Instructions
Vehicles may present with oil leak coming from the clutch/flywheel housing and observation of burned clutch smell or clutch slipping. These symptoms can be mistaken as a crankshaft rear main seal leak, when the actual cause is the crankshaft adaptor O-ring.
CBR-2409 202411
Service Bulletin/Repair Instructions
CBR - 13L Engine - Rear Main Oil Seal Leak Model Year 2025
CBR-2417 202411
Service Bulletin/Repair Instructions
CBR - 11L Engine block compatibility and Backward Conversion Parts Requirements
CBR-2263 202410
Service Bulletin/Repair Instructions
CBR - Mack Chassis - Timing Gear Plate Repair
CBR-2411 202410
Service Bulletin/Repair Instructions
CBR - One-Box SCR Weld Leaks.
CBR-2409 202410
Service Bulletin/Repair Instructions
CBR - 13L Engine - Rear Main Oil Seal Leak - Model Year 2025
S4088 202409
Service Campaign
Service Campaign: Interaxle Driveline Torque
CBR-2376 202409
Service Bulletin/Repair Instructions
CBR: Drivers Information Display (DID) Inoperative/Goes Blank During Vehicle Operation
CBR-731 202409
Service Bulletin/Repair Instructions
CBR: Automated Manual Transmission (AMT) Model D or F (mDrive and I-Shift, AMT-D, AMT-F) - Transmission Oil Leakage From Transmission Input Shaft Seal Or Output Shaft Seal - US10 And Newer Emissions, Common Model Years 2010 And Newer
CBR-407 202409
Service Bulletin/Repair Instructions
CBR: To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP fi le will need to be downloaded.
CBR-471 202409
Service Bulletin/Repair Instructions
CBR: The procedure to eliminate the Mack Chassis "Air Restriction Light On" seen in the cluster is to confirm that the parameter YYT is set to "Enable" with Premium Tech Tool.
CBR-343 202408
Service Bulletin/Repair Instructions
CBR: Mack chassis with an mDRIVE transmission, there have been reports of complete shift assemblies and TECUs being replaced due to technicians being unable to pinpoint the source of the air leak.
CBR-523 202408
Service Bulletin/Repair Instructions
CBR: Overhead Wear Overview - Model Year2018 To Current (Common Rail Fuel System ONLY)
CBR-561 202408
Service Bulletin/Repair Instructions
CBR: 11L, 13L, And 16L Engine Oil Analysis Specifications - US10 And Newer Emissions
S0488 202407
Service Campaign
Service Campaign: Interaxle Driveline Torque
CBR-2384 202407
Service Bulletin/Repair Instructions
CBR: Mack Chassis - Day Cab Glass Breakage
CBR-2356 202407
Service Bulletin/Repair Instructions
CBR: Drivers Information Display (DID)Inoperative After Cluster Replacement And Programming
CBR-2350 202407
Service Bulletin/Repair Instructions
CBR: Telematics Gateway (TGW) Connect Ability Issues
CBR-2384 202406
Service Bulletin/Repair Instructions
CBR - Mack Chassis - Day Cab Glass Breakage
CBR-2383 202406
Service Bulletin/Repair Instructions
CBR - Accelerator Pedal: Inspection Instructions
CBR-2376 202406
Service Bulletin/Repair Instructions
CBR - Drivers Information Display (DID) Inoperative/Goes Blank During Vehicle Operation
CBR-2356 202406
Service Bulletin/Repair Instructions
CBR - Drivers Information Display (DID) Inoperative After Cluster Replacement And Programming
S3949 202406
Service Campaign
SC - Steering Stub Shaft Hardware Replacement
CBR-2139 202405
Service Bulletin/Repair Instructions
CBR: Vehicles built with an 11 liter engine may experience a complaint of excessive fuel in the oil. It is possible that the source of the fuel is the rear fuel galley plug in the cylinder head. A new and improved fuel galley plug has been developed to resolve this issue.
CBR-1008 202404
Service Bulletin/Repair Instructions
CBR: Equipped With An Automated Manual Transmission Model D or F ( AMT-D, AMT-F, mDrive) Missing X1 Value In VDA And Default Settings Guidelines, ParameterP1AOB; Fault Code P1052-54, Error 40,Or Error 18 Encountered During Clutch Or Tran.
S3949 202404
Service Bulletin/Repair Instructions
Service Campaign: Steering Stub Shaft Hardware Replacement
CBR-2013 202404
Service Bulletin/Repair Instructions
CBR: Turbo Compound (TC) Hot Side Noise, Diagnostic Information.
CBR-2139 202403
Service Bulletin/Repair Instructions
CBR: Vehicles built with an 11 liter engine may experience a complaint of excessive fuel in the oil. It is possible that the source of the fuel is the rear fuel galley plug in the cylinder head.
CBR-2356 202403
Service Bulletin/Repair Instructions
CBR: After cluster replacement and programming, the Driver Information Display (DID) may not function as designed.