CBR 2362-3 202604
Service Bulletin/Repair Instructions
CBR - Mack Carrier Nut Adhesive Change.
Vehicle report
2023 MACK LR
Service bulletins
70 bulletinsTechnical 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 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 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 2171-11 202511
Service Bulletin/Repair Instructions
CBR - Mack Temperature Sensor Troubleshooting Guide
CBR 2515-1 102025
Service Bulletin/Repair Instructions
CBR - Hard Steering Due to Steering Column Miter Box Corrosion – Inspection and Replacement Procedure
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-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-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.
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-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-2258 202409
Service Bulletin/Repair Instructions
CBR: Diagnostic Trouble Code (DTC) P107471 - AMT-F
CBR-570 202409
Service Bulletin/Repair Instructions
CBR: US17 GHG Common Rail Fuel System Component Electrical Faults - Model Year 2017 To 2024
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.
S0310 202409
Service Campaign
Service Campaign: TGW3 Non-Communication
S0310 202408
Service Campaign
Service Campaign: Mack trucks has determined that certain AN, GR, PI, TE, and LR model trucks built with TGW3 have stopped communicating after production.
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
CBR-2391 202408
Service Bulletin/Repair Instructions
CBR: Diagnostic Trouble Code (DTC) U010187- Lost Communication With TECU
CBR-2350 202407
Service Bulletin/Repair Instructions
CBR: Telematics Gateway (TGW) Connect Ability Issues
CBR-2383 202406
Service Bulletin/Repair Instructions
CBR - Accelerator Pedal: Inspection Instructions
CBR-2334 202406
Service Bulletin/Repair Instructions
CBR - Brake Caliper Concerns And Premature Brake Pad Wear - Model Year 2023 - 2024
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.
CBR-2258 202404
Service Bulletin/Repair Instructions
CBR: Diagnostic Trouble Code (DTC) P107471 -AMT-F
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-2258 202402
Service Bulletin/Repair Instructions
CBR - Diagnostic Trouble Code (DTC) P107471 - AMT-F
CBR-2350 202402
Service Bulletin/Repair Instructions
CBR -Telematics Gateway (TGW) Connect Ability Issues
CBR-2014 202402
Service Bulletin/Repair Instructions
CBR - Driveline Noise, Suspension Ride Height Too High, Suspension Will Not Exhaust - Chassis Built 2016w01 And Newer.
CBR-202 202402
Service Bulletin/Repair Instructions
CBR - Automated Manual Transmission ( AMT ) Flywheel Pilot Bearing Wear On Input Shaft.
CBR-2347 202402
Service Bulletin/Repair Instructions
CBR - Active "Set Park Brake" Message On Drivers Information Display (DID).
CBR-2333 202401
Service Bulletin/Repair Instructions
CBR: TGW Will Not Connect After SIM Card Replacement
CBR-2320 202312
Service Bulletin/Repair Instructions
CBR: For vehicles equipped with an 11L engine, the plastic saddle bracket holding the a/c line on the left side of the engine may move excessively and rub the area where it secures the line.
M-465-001 202311
Service Bulletin/Repair Instructions
TSB: Mack Trucks now offer an improved HD Inter-Axle Through Shaft for the CRD 125, 150, 180, and 200 family carriers. The new HD shaft went into production on January 23rd, 2023 for 2.54 - 3.50 axle ratios and April 1st, 2023 for 3.56 - 3.98 ratios. The new HD through shaft is an upgrade over the current standard shaft and can now be used as a replacement part instead of the standard shaft. The new HD shaft has a new design to increase strength, longevity and life over the standard shaft.
CBR-399 202310
Service Bulletin/Repair Instructions
CBR: Vehicle Overspeed Warning Comes Active At A Lower Speed Than Expected; Vehicle Overspeed Warning In Driver Information Display (DID) - Model Year 2018 And Newer With New Style Instrument Cluster
M-258-014 202309
Service Bulletin/Repair Instructions
TSB: Aftertreatment Diesel Exhaust Fluid (DEF) Tank, Level Sensor, Replacement
CBR-2131 202308
Service Bulletin/Repair Instructions
CBR: Intermittent Diagnostic Trouble Codes U02A3,U029D, U029E - USE FOR NEW VEHICLES (US21+OBD22 Emissions)
M728-005A 202308
Service Bulletin/Repair Instructions
TSB: Barksdale Leveling Valve, Leak Test
CBR-2112 202307
Service Bulletin/Repair Instructions
CBR: Programming Failure - Chassis With Cummins Engine And An Allison Transmission
CBR-2303 202307
Service Bulletin/Repair Instructions
CBR: Mack DEF Dosing Valve Diagnostic Trouble Codes (DTC) P202D00, P208E00, P103B00 - US10+OBD13 And Newer Emissions
KC-2289
Service Bulletin/Repair Instructions
Diagnostic Trouble Code (DTC) P103200: Particulate Matter Sensor Removed from Exhaust - US21+OBD22 Emissions
KC-2094 Rev 3
Service Bulletin/Repair Instructions
Infotainment System - Volume Drop During A Phone Call, Phone Connected Via Bluetooth
KC-2116 Rev 9
Service Bulletin/Repair Instructions
Mack NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions
S3236
Service Bulletin/Repair Instructions
Campaign - On certain Mack truck models built with a MP8 engines, there were some inconsistencies with the engine valve and injector adjustments.
KC-2292
Service Bulletin/Repair Instructions
Vehicles Equipped With Chalmers Suspension - Frame Bracket Hardware Loose or Interfering
KC-2043 Rev 4
Service Bulletin/Repair Instructions
Engine Control Module (EMS) Software (MSW) Information - Improvement List, Through June 2023 - US21+OBD2020 Emissions
KC-2279
Service Bulletin/Repair Instructions
iLok Fastener Torque
KC-2116 Rev 8
Service Bulletin/Repair Instructions
Mack NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions
KC-2158 Rev 6
Service Bulletin/Repair Instructions
CBR - Mack Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide - US10+OBD13 And Newer Emissions
SLM23-005
Service Bulletin/Repair Instructions
Service Literature Published and Released in May, 2023
KC-2050
Service Bulletin/Repair Instructions
CBR: Diagnostic Trouble Code (DTC) P225C00 : NOx1 Sensor Stuck High - US17+OBD2019 And Newer Emissions
KC-331-Ver6
Service Bulletin/Repair Instructions
CBR: Model Year 2017 to Current - Fuel Filter Change ( Primary And Secondary ) For The EM - USA17 Emission Engines
KC-2012-Ver3
Service Bulletin/Repair Instructions
CBR: SNM 20-005 - HD Disc Brake Rotor Upgrade
KC-503-Ver3
Service Bulletin/Repair Instructions
CBR: Automated Manual Transmission ( AMT ) -Transmission Electronic Control Unit ( TECU ) MID130 PSID 29 FMI 7 /P10AE81 Fault Codes Being Generated
KC-2263-Ver5
Service Bulletin/Repair Instructions
CBR: Timing Gear Plate Repair. This solution provides supplementary information to be used when installing a Timing Gear Plate with Integrated Seal.
KC-2229-Ver2
Service Bulletin/Repair Instructions
CBR: Automated Manual Transmission (AMT) Transmission Kickdown Mode
KC-2226-Ver3
Service Bulletin/Repair Instructions
CBR: Diagnostic Trouble Code (DTC) U1FFF68 - Factory Mode Active, Event Information - Model Year (MY) 2023
KC-474-Ver5
Service Bulletin/Repair Instructions
CBR: Diagnostic Trouble Code (DTC) P215A-64, Fault Code SPN 84 FMI 19
KC-2264
Service Bulletin/Repair Instructions
CBR: Mack Chassis - Allison Reduced Engine Load At A Stop (RELS) Diagnostic Trouble Code P071a Or P07ce - GR,TE,LR Models - Non-Split/Drop Box PTO
KC-2272
Service Bulletin/Repair Instructions
CBR: Diagnostic Trouble Code (DTC) P008A - Low Pressure Fuel System Pressure - Too Low
M-773-005a
Service Bulletin/Repair Instructions
TSB: Hub Cap, Leaking
Reading this report
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.