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Service bulletins for the 2020 Mack Anthem

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.

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

By type

By component

By trouble code

Bulletins, newest first
PI08862019-07-01. Service bulletin. VISIBILITY. Down View Mirror
K420650422019-07-01. Service bulletin. ELECTRICAL SYSTEM. Engine Preheat Icon Does Not Illuminate In The Instrument Cluster (IC) During Engine Pre-heat (Intake Air Heater) Operation - Post-Facelift Vehicles, Model Year 2018 And Newer
K335936042019-07-01. Service bulletin. ELECTRICAL SYSTEM. Diagnostic Trouble Codes (DTC) P0069-64, P10EC-00, P0191-00 and P240F-00 In Different Combinations, Occurrences, And Time Stamps (Two To Four Codes), Possible Vehicle Derate - US17+OBD16, US17+OBD18 Emissions, Common Model Years 2018 And 2019
K665007192019-07-01. Service bulletin. EQUIPMENT; POWER TRAIN. Automated Manual Transmission (AMT) Clutch Failures At Service Replacement; New Clutch Found To Be Damaged When Unboxed Or Fails Soon After Replacement
K525354912019-07-01. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE. Diagnostic / Troubleshooting Procedures For Exhaust Gas Recirculation (EGR) System Components; Covers Most EGR System Diagnostic Trouble Codes (DTC), See List In Solution - US10, US10+OBD13, US14+OBD*, US17+OBD* With A Variable Geometry Turbocharger (VGT)
K367637342019-05-20. Service bulletin. ELECTRICAL SYSTEM; ENGINE. 13L Engines - High Engine Oil Pressure, Frequently Accompanied By P0521-64 Oil Pressure Sensor - Plausibility Fault
K655277082019-05-20. Service bulletin. ENGINE. Diagnostic Trouble Codes (DTC) P20EE And P103C, Diagnostic Procedure; REPLACES GUIDED DIAGNOSTICS IN PREMIUM TECH TOOL ( PTT ) - US17+OBD16 And Newer Chassis ONLY
K853184132019-05-20. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Noise On The AM Radio Band; Poor Or No Reception On AM Radio - Model Year 2018 And Newer
K638795412019-05-20. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT:ELECTRICAL. Unable To Retrieve "On Request" Messages For PeopleNet Or Omnitracs Modules Installed On The DL5 Data Link; Third Party Electronic Log Device Not Reporting Certain Data
K735350382019-05-20. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS. Mack Chassis - Equipped With A Cummins 9 Liter Engine - Serpentine Belt Excessively Worn Or Damaged; Fan Belt Shredding Or Fraying Repeatedly
K525354912019-05-20. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). Diagnostic / Troubleshooting Procedures For EGR System Components; Diagnostic Trouble Codes (DTC) P0401-00, P0402-00, P04DD-00, P1121-00, P1121-98 Or SPN 2659 FMI 16, SPN 2659 FMI 18, SPN 412 FMI 0, SPN 412 FMI 15 - US10, US10+OBD13, US14+OBD*, US17+OBD* With A Variable Geometry Turbocharger (VGT)
FSB563-0082019-05-20. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. Plugs, Pressure Protection Manifold
SNM19-0012019-04-22. Service bulletin. EQUIPMENT; VISIBILITY. Please be advised the optional Right Hand Side Down View Mirror will not be installed on vehicle models AN, PI, GR from the factory effective immediately. This is a result of a quality issue that has been discovered.
FSB563-0082019-04-22. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Plugs, Pressure Protection Manifold
K912146782019-04-22. Service bulletin. EQUIPMENT; POWER TRAIN; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Automated Manual Transmission (AMT) Faults - Diagnostic Trouble Codes (DTC) P1052-18 Or MID 130 PID 33 FMI 5 Intermittent Fault In Cold Weather - US07 And Newer Emissions, Model Year 2008 And Newer
K713130152019-02-19. Service bulletin. STRUCTURE:BODY:HOOD. Hood Insulation Separating From Hood, Insulation Installation Instructions
K170390502019-02-19. Service bulletin. ELECTRICAL SYSTEM. Bendix ACom® - EC80 ESP Controller; ABS And ATC Lights Illuminated, Fault Codes Present After Making Changes, Calibration Or Programming With Acom
K110653982019-02-19. Service bulletin. ENGINE AND ENGINE COOLING. Mack Chassis - Crankcase Ventilation ( CCV ) Oil Leaks - FSB 257 - 004, FSB 257 - 006 - US14 And US15 Emissions
K146374122019-02-19. Service bulletin. FUEL SYSTEM, GASOLINE. Diagnostic Trouble Codes (DTC) P0194-00 - Fuel Rail Pressure Sensor, Circuit Erratic, Intermittent And/Or P016E-00 Closed Loop Fuel Pressure At Control Limit, Pressure Too High - US17+OBD16 (Common Rail Fuel System) Emissions And Newer; Model Year 2017 And Newer

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