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Service bulletins for the 2015 Mack LR

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

178 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
M-465-001 2023112023-12-05. Service bulletin. POWER TRAIN. 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.
M-258-014 2023092023-10-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ENGINE AND ENGINE COOLING. TSB: Aftertreatment Diesel Exhaust Fluid (DEF) Tank, Level Sensor, Replacement
M728-005A 2023082023-09-06. Service bulletin. SUSPENSION. TSB: Barksdale Leveling Valve, Leak Test
CBR-2112 2023072023-08-02. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN; ENGINE AND ENGINE COOLING. CBR: Programming Failure - Chassis With Cummins Engine And An Allison Transmission
CBR-2303 2023072023-08-02. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE AND ENGINE COOLING. CBR: Mack DEF Dosing Valve Diagnostic Trouble Codes (DTC) P202D00, P208E00, P103B00 - US10+OBD13 And Newer Emissions
KC-22922023-07-06. Service bulletin. SUSPENSION. Vehicles Equipped With Chalmers Suspension - Frame Bracket Hardware Loose or Interfering
KC-2116 Rev 92023-07-06. Service bulletin. ENGINE AND ENGINE COOLING. Mack NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions
KC-2116 Rev 82023-07-06. Service bulletin. ENGINE AND ENGINE COOLING. Mack NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions
KC-2158 Rev 62023-07-06. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. CBR - Mack Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide - US10+OBD13 And Newer Emissions
SLM23-0052023-06-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Service Literature Published and Released in May, 2023
KC-503-Ver32023-06-05. Service bulletin. POWER TRAIN. CBR: Automated Manual Transmission ( AMT ) -Transmission Electronic Control Unit ( TECU ) MID130 PSID 29 FMI 7 /P10AE81 Fault Codes Being Generated
KC-2229-Ver22023-06-05. Service bulletin. POWER TRAIN. CBR: Automated Manual Transmission (AMT) Transmission Kickdown Mode
KC-474-Ver52023-06-05. Service bulletin. POWER TRAIN. CBR: Diagnostic Trouble Code (DTC) P215A-64, Fault Code SPN 84 FMI 19
KC-22642023-05-03. Service bulletin. ELECTRICAL SYSTEM. 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-22692023-05-02. Service bulletin. ENGINE AND ENGINE COOLING. CBR: 11L Engines, Non-Common Rail - Air Compressor Coolant Pipe, Parts Substitution - US14+OBD13 To US14+OBD16
KC-7532023-04-04. Service bulletin. ELECTRICAL SYSTEM. Mack Chassis - TerraPro (MRU) And Low Entry (LEU) Models - Field Service Bulletin FSB 381-042, Warning Light Bar (WLB) Replacement and Software Conversion Kit - US07, US10, US10+OBD13, US14+OBD13 To US14+OBD16 Emissions, Model Years 2008 To 2017
S76272023-03-07. Service bulletin. ENGINE AND ENGINE COOLING. Mack MMD Alternator Pulley
KC-22442023-03-07. Service bulletin. STRUCTURE:FRAME AND MEMBERS; SUSPENSION. Mack Model TE,LR - Frame Over Height
KC-21652023-03-07. Service bulletin. ENGINE AND ENGINE COOLING. Mack DEF Pump Troubleshooting Guide - US10+OBD13 And Newer Emissions
KC-21652022-11-03. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Mack DEF Pump Troubleshooting Guide - US10+OBD13 And Newer Emissions
M-265-0022022-10-06. Service bulletin. ENGINE AND ENGINE COOLING. TSB-Charge Air Cooler t-clamp install.
KC-21122022-07-05. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN; ENGINE AND ENGINE COOLING. Programming Failure - Chassis With Cummins Engine And An Allison Transmission
KC-21162022-07-05. Service bulletin. ENGINE AND ENGINE COOLING. NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions.
KC-21432022-07-05. Service bulletin. VEHICLE SPEED CONTROL. (Back Office) - Cruise Control Inoperative After Updating Software VECU5 Without ESP Package (UESP).
KC-21582022-07-05. Service bulletin. ENGINE AND ENGINE COOLING. Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide - US10+OBD13 And Newer Emissions.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.