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Service bulletins for the 2021 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.

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

By type

By component

By trouble code

Bulletins, newest first
SNM21-0062021-11-04. Service bulletin. COMMUNICATION:MANUFACTURER TELEMATICS; UNKNOWN OR OTHER; ELECTRICAL SYSTEM:SOFTWARE. Remote Software Downloads
KC-21372021-10-01. Service bulletin. STRUCTURE. Mack Chassis - Anthem (AN) Water Leak Around Door
S76012021-10-01. Service bulletin. ENGINE AND ENGINE COOLING. Exhaust Stack Height Change with Aero
S75972021-10-01. Service bulletin. ENGINE AND ENGINE COOLING. Inlet Valve Spring Replacement
KC-3282021-10-01. Service bulletin. ELECTRICAL SYSTEM. Diagnostic Trouble Codes (DTC) P208064, P208464, P242B64 and P246F64 Lighting The Malfunction Indicator Lamp (MIL) - US17+OBD19 And Newer Emissions, Model Years 2020 and Newer
KC-21392021-09-02. Service bulletin. ENGINE AND ENGINE COOLING. 11 Liter Engines - Fuel In Oil - Vehicles Built Between October 2020 And June 2021
S75742021-08-03. Service bulletin. ELECTRICAL SYSTEM. TECU SOFTWARE UPDATE
KC-2892021-08-02. Service bulletin. EQUIPMENT. Mack Models CHU, CXU, AN, PI - Troubleshooting And Repair Information For The Indel B Refrigerator - All Model Years
S75762021-08-02. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. VECU Software Update
CBR-152021-07-06. Service bulletin. ENGINE AND ENGINE COOLING. Diagnostic Trouble Codes (DTC) For The Engine Pre-Heat Relay: Supplementary Instructions
KC-21132021-07-02. Service bulletin. VISIBILITY. Mack Chassis - Hood Mirror Vibration - Model AN
KC-21132021-06-04. Service bulletin. VISIBILITY. Mack Chassis - Hood Mirror Vibration - Model AN
FSB 511-0102021-05-04. Service bulletin. SERVICE BRAKES, AIR. Disc Brake Rotor, Replacement
KC-20612021-05-04. Service bulletin. ELECTRICAL SYSTEM; SUSPENSION. Mack Chassis - Anthem (AN) And Pinnacle (PI) - ABS Modulator Wiring Rubbing Front Shock
SC04222021-04-06. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Canada Non-Compliance DRL overide
KC-21032021-04-05. Service bulletin. LATCHES/LOCKS/LINKAGES. Mack Chassis - Model Anthem (AN) - Hood Latch/Cable Sticking Or Binding
S75572021-03-03. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. VECU Active code and no MIL Lights
SNM21-0012021-02-01. Service bulletin. ENGINE AND ENGINE COOLING. Improved method for determining which DTC to troubleshoot in a MIL on situation
S75532021-02-01. Service bulletin. VEHICLE SPEED CONTROL. Road Speed Limit Default Setting
S75522021-02-01. Service bulletin. EQUIPMENT:OTHER:LABELS; STRUCTURE:BODY:DOOR. Incorrect Data on Door Label Set
KC-20602021-02-01. Service bulletin. LATCHES/LOCKS/LINKAGES. Mack Anthem - Hood Latch Striker Rattle
S75452020-12-01. Service bulletin. STEERING; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Draglink Split Pin Inspection
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
KC-20242020-08-05. Service bulletin. SERVICE BRAKES, AIR. Mack Chassis - Bendix ABS Fault SPN 807 FMI 13 Blink code 19-4

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