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Service bulletins for the 2019 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.

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

By type

By component

By trouble code

Bulletins, newest first
KC-6862022-06-07. Service bulletin. VEHICLE SPEED CONTROL; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC). (Back Office Only) Mack Chassis - Cruise Control Inoperative After Disabling The Electronic Stability Program (ESP)
KC-6982022-06-07. Service bulletin. ENGINE AND ENGINE COOLING. Mack Chassis - Diesel Exhaust Fluid ( DEF ) System Cleaning/Flush After DEF Pump Failure Or System Contamination
KC-6992022-06-07. Service bulletin. ELECTRICAL SYSTEM. Mack Chassis - Bendix Vendor Configuration Program ( VCP ) Software Download Information
KC-7002022-06-07. Service bulletin. POWER TRAIN. Mack Chassis - Automated Manual Transmission Model F ( AMT-F, mDrive ) - Short Transmission Replacement; Calibration And/Or Shifting Problems Following Replacement Of A Short Transmission - US17+OBD2016 And Newer Emissions, Model Year 2018 And Newer
KC-7142022-06-07. Service bulletin. ENGINE AND ENGINE COOLING. Mack Chassis - Diagnostic Trouble Codes ( DTC's ) - P020113, P020213, P020313, P020413, P020513, P020613, Cylinders 1 Through 6 Injector A Open Circuit
KC-7302022-06-07. Service bulletin. ENGINE AND ENGINE COOLING. Mack Chassis - Engine Fan Override Information For Model LR
KC-7312022-06-07. Service bulletin. POWER TRAIN. Mack Chassis - Equipped With An Automated Manual Transmission Model D or F (mDrive, 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
KC-5872022-06-07. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE. Mack Chassis - SNM15-027 A/C Compressor Inspection Required For Warranty Repairs
KC-6342022-05-06. Service bulletin. FUEL SYSTEM, DIESEL. Model Year 2017, 2018 - US17 Emission Engines - The ( Donaldson ) Fuel Filter - Part Number P550529 - " Cannot " Be Used
KC-21092022-04-05. Service bulletin. ENGINE AND ENGINE COOLING. Mack Chassis - Diagnostic Trouble Code (DTC) P009B13 Fuel Pressure Relief Control – Circuit Open; Possible Derate - US17+OBD16 And US17+OBD18 Emissions, Model Years 2018 And 2019
KC-1682022-04-05. Service bulletin. ENGINE AND ENGINE COOLING. Mack Chassis - Diagnostic Trouble Code ( DTC ) P0420 Illuminating The Malfunction Indicator Lamp (MIL) - US17+OBD16 And US17+OBD18 (GHG17) Emissions (Common Rail Fuel System) - Commonly Model Years 2018 And 2019
KC-1572022-04-05. Service bulletin. FUEL SYSTEM, DIESEL. Mack Chassis - Diagnostic Trouble Code ( DTC ) P009E-73 - Fuel Pressure Relief Control Performance / Stuck Off - US17+OBD16 And US17+OBD18 ( GHG17 ) Emissions (With Common Rail Fuel System), Commonly Model Years 2018 And 2019
KC-21072022-03-03. Service bulletin. ENGINE AND ENGINE COOLING. DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions and Newer
KC-5612022-03-03. Service bulletin. ENGINE AND ENGINE COOLING. Engine Oil Analysis Specifications - US10 And Newer Emissions
KC-5522022-03-03. Service bulletin. ENGINE AND ENGINE COOLING. Aftertreatment Control Module ( ACM ) Diagnostic Trouble Codes ( DTC ) U0001-88 and U0010-88 Lighting The Malfunction Indicator Lamp ( MIL ); Possible Derate Warning – US10 And Newer Chassis
KC-21072022-03-03. Service bulletin. UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING. DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions and Newer
S75672022-02-06. Service bulletin. FUEL SYSTEM, DIESEL. EPRV Delete & Fuel Rail Pressure Sensor Update
KC-4782022-02-06. Service bulletin. ENGINE AND ENGINE COOLING. Variable Geometry Turbocharger ( VGT ) Function Test ( 2551-08-03-02 ), OBD13 Model Year ( MY ) 2014 And Newer
KC-4172022-02-04. Service bulletin. SERVICE BRAKES, AIR. Mack Chassis - Air System Schematics For Models - MRU, LEU And ( LR ) Using The Same Schematic As the LEU
KC-4152022-02-04. Service bulletin. ENGINE AND ENGINE COOLING. Diagnostic Trouble Code ( DTC ) P26E8 Intermittently Lighting The Malfunction Indicator Lamp ( MIL ); Possible Derate Warning - US10+OBD13 And Newer Emissions, Model Year 2014 And Newer
KC-4062022-02-04. Service bulletin. FUEL SYSTEM, DIESEL. Dye Test Procedure; Fuel System Leak Check - Common Rail Fuel System - US17+OBD16 And Newer Emissions, Common Model Year 2018 And Newer
KC-4012022-02-04. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Diagnostic Trouble Codes (DTC) P24F600 Or P24F700 - US14+OBD15 Emissions And Newer, Model Year 2016 And Newer
KC-3982022-02-04. Service bulletin. POWER TRAIN. Chassis Equipped With An AMT-F (I-Shift, mDrive) - Idle Drive Function Activates When Vehicle Is Reversing/Backing Up At Low Speed; Information And Repair - Build Date Beginning Of Production 2017 To February 2018
KC-4062022-02-04. Service bulletin. EQUIPMENT; FUEL SYSTEM, DIESEL. Dye Test Procedure; Fuel System Leak Check - Common Rail Fuel System - US17+OBD16 And Newer Emissions, Common Model Year 2018 And Newer
KC-4022022-02-04. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ELECTRICAL SYSTEM. Volvo Chassis - Diagnostic Trouble Code (DTC) SA 0 FMI 0 or SPN 0 FMI 0 Present On Fault Code Readout - US10 And Newer Emissions, Model Year 2011 And Newer

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