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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
KC-20602021-02-01. Service bulletin. LATCHES/LOCKS/LINKAGES. Mack Anthem - Hood Latch Striker Rattle
FSB 284-0702021-01-07. Service bulletin. FUEL SYSTEM, DIESEL; ELECTRICAL SYSTEM:WIRING; EQUIPMENT. DTC P0194-00 and/or P016E-00, Fuel Rail Pressure Sensor (RPS) and wiring harness, Replacement
FSB 491-0322020-12-01. Service bulletin. EQUIPMENT; POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY. Transmission Oil Cooler Hose, Replacement
FSB 801-0042020-11-01. Service bulletin. VISIBILITY. Cab Door Glass Bracket, Installation
FSB 258-0392020-11-01. Service bulletin. ENGINE AND ENGINE COOLING. SCR Fittings, One Box, Replacement PM, NOx and Temperature Sensor Fittings
S75342020-11-01. Service bulletin. ENGINE AND ENGINE COOLING. Remote Diagnostics - ACM and ECM Software Update
KC-9112020-09-03. Service bulletin. EQUIPMENT. Mack Chassis - Anthem (AN) - Air Deflector Cover Installation; Cover For Antenna Opening On Back Of Air Deflector - Model Year 2018 And Newer
KC-20242020-08-05. Service bulletin. SERVICE BRAKES, AIR. Mack Chassis - Bendix ABS Fault SPN 807 FMI 13 Blink code 19-4
S75092020-07-06. Service bulletin. FUEL SYSTEM, GASOLINE. Secondary Fuel Filter replacement
S7485v22020-07-06. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. CarPlay SW Update with SEM
S7483v22020-07-06. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. CarPlay SW Update with Hardware
S7476v22020-07-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. CarPlay SW Update
K533380752020-06-03. Service bulletin. ENGINE AND ENGINE COOLING. Diagnostic Trouble Codes (DTC) For The Engine Pre-Heat Relay: Supplementary Instructions - US10+OBD13 And Newer Emissions, Model Year 2014 And Newer
S74952020-06-03. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. Coolant Drain Line
K475478562020-05-06. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. Particulate Matter (PM) Sensor Diagnostic Trouble Codes (DTC) Illuminating The Malfunction Indicator Lamp (MIL) - US14+OBD16, US17+OBD16 And Newer Emissions, Model Year 2017 And Newer - To Be Used For EVERY Visit
K595542552020-05-05. Service bulletin. ENGINE AND ENGINE COOLING. EXPIRED - Refer To K47547856 - Debranded Solutions - Mack Chassis - Particulate Matter (PM) Sensor Diagnostic Trouble Codes (DTC) Illuminating The Malfunction Indicator Lamp (MIL); Tech Tip TT-014-2016 - US14+OBD16, US17+OBD16 And Newer Emissions, Common Model Year 2017 And Newer - To Be Used For EVERY Visit
K011572832020-04-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS; ELECTRICAL SYSTEM. Front Accessory Drive Noise, Alternator Belt Wear, Alternator Belt Tensioner Failure - Model Year 2017 And Newer
K011572832020-04-03. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS; ELECTRICAL SYSTEM. Front Accessory Drive Noise, Alternator Belt Wear, Alternator Belt Tensioner Failure - Model Year 2017 And Newer
S74482020-03-09. Service bulletin. ELECTRICAL SYSTEM:IGNITION; EQUIPMENT; ENGINE. IGNITION CYLINDER REPLACEMENT-CUMMINS ENGINE
K420650422020-02-24. Service bulletin. ENGINE AND ENGINE COOLING. Mack Chassis - 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 2018 Instrument Cluster Update, Model Year 2018 And Newer
K535805142020-01-13. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ENGINE. Brake Drum Inspection - Checking Runout, Wear, And Other Characteristics
K318223252020-01-13. Service bulletin. POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Mack Chassis - Differential Carrier Models CRD 125 And CRD 150 - New Differential Axle Seal Installation Tool; New Tool Required For New Input And Output Seal Installation
K409142412020-01-13. Service bulletin. FUEL SYSTEM, GASOLINE. Common Rail Fuel System Faults - Diagnostic Trouble Codes (DTC) P0094, P228F, P016F, P0087,P00C6, P0257, P2A17, P2A1F, P008A; Repair Information - US17+OBD16, US17+OBD18, and US17+OBD19 Emissions, Model Years 2018 To 2020
K292957442020-01-13. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING:ENGINE:DIESEL; EQUIPMENT. Updated PM Sensor Removal Procedure - US17+OBD16 and Newer Emissions
K889928922020-01-13. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Assembled Camshaft - Injector Lobe Rotation Inspection For Possible Spun Camshaft Lobe; Diagnostic Trouble Codes (DTC) P0257-00, P2A17-00, Or P2A1F-00, Possible Lack Of Power - US17+OBD16 and Newer Emissions

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