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-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 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.
CBR 2432-2 202601
Service Bulletin/Repair Instructions
CBR - Mack Chassis - AN And GR Models - Door Glass Shattering.
CBR 199 202512
Service Bulletin/Repair Instructions
Vehicles affected by this issue will show coolant runoff on the front rights side of the engine.
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.
S4579 092025
Service Campaign
Mack Trucks has identified that certain truck models may have been assembled with incorrect center bearing mounting hardware and could have been torqued incorrectly. Improper torque can increase the risk of hardware failure. To address this issue, please follow the instructions in this document to replace and correctly torque the center bearing and center bearing mounting bracket 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.
S4574 072025
Service Campaign
SC - Mack Trucks has identified that certain truck models may have been assembled with incorrectly torqued interaxle prop shaft U-joint hardware.
S4578 072025
Service Campaign
SC - Mack Trucks has determined that certain AN models were assembled without a crossmember that was needed for the pusher axle.
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 2464-1 202505
Service Bulletin/Repair Instructions
Mack Chassis - Rear Axle Overheat
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-2449 202503
Service Bulletin/Repair Instructions
Cummins Exhaust Aftertreatment System (EATS) catalysts may experience cracking, which may be attributed to excessive vertical vibration in the exhaust stack. To mitigate this issue, a modification to the exhaust stack length is required.
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
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.