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Service bulletins for the 2026 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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
SC S4742 2026012026-02-03. Service campaign. ENGINE. CBR MCO/VECI Label Reprint.
CBR 2545-1 2026012026-02-03. Service bulletin. ELECTRICAL SYSTEM. CBR - U114688 VMCU Communication Fault - AN (4) - PR (4).
CBR 2540-5 2026012026-02-03. Service bulletin. UNKNOWN OR OTHER; STRUCTURE:BODY. CBR - Upper Bunk Restraint System – Plastic Gable Retention Field Fix.
CBR 2522-5 2026012026-02-03. Service bulletin. ENGINE. CBR - Frequent Parked Regeneration Requests - Models PR (4), AN (4).
CBR 2516-6 2026012026-02-03. Service bulletin. VEHICLE SPEED CONTROL; ELECTRICAL SYSTEM. CBR - CMS Black Screen Troubleshooting - PR (4) - AN (4).
CBR 2502-2 2026012026-02-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Mack Chassis - Battery Sensor Diagnostic and Calibration Procedure - PR (4) - AN (4).
CBR 2496-9 2026012026-02-03. Service bulletin. ELECTRICAL SYSTEM. CBR - The purpose of this CBR is outline the interim software solution for PR(4) and AN(4).
CBR 2443-3 2026012026-02-03. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES. CBR - Trailer Tandem Adjustment Procedure - PR (4) - AN (4).
CBR 2432-2 2026012026-02-03. Service bulletin. STRUCTURE:BODY; VISIBILITY/WIPER. CBR - Mack Chassis - AN And GR Models - Door Glass Shattering.
CBR 2542 2025122026-01-06. Service bulletin. ELECTRICAL SYSTEM. This document provides mandatory interim parameter settings to ensure proper vehicle operation.
CBR 2540 2025122026-01-06. Service bulletin. STRUCTURE:BODY; UNKNOWN OR OTHER. Upper Bunk Restraint System – Plastic Gable Retention Field Fix
CBR 2526 2025122026-01-05. Service bulletin. ELECTRICAL SYSTEM. The purpose of this CBR is to address driver complaint of parking heater inoperative.
CBR 199 2025122026-01-05. Service bulletin. ENGINE. Vehicles affected by this issue will show coolant runoff on the front rights side of the engine.
CBR 2532-1 2025112025-12-03. Service bulletin. EXTERIOR LIGHTING. CBR - Automatic High Beam PR(4) - AN(4).
CBR 2526-4 2025112025-12-03. Service bulletin. ELECTRICAL SYSTEM; ENGINE. CBR - Parking Heater Inoperative - PR(4) - AN (4).
CBR 2514-2 2025112025-12-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Lost Communication to Alternator Message - DTC C103508.
CBR 2467-5 2025112025-12-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Service Required Message PR(4), AN(4).
CBR 2171-11 2025112025-12-03. Service bulletin. ENGINE; ELECTRICAL SYSTEM. CBR - Mack Temperature Sensor Troubleshooting Guide
CBR 199-6 2025112025-12-03. Service bulletin. ENGINE. CBR - 13 Liter Engines ONLY - Engine Coolant Pump Housing Leak; Coolant Found Around The Oil Cooler Duct Cover Or In Between The Coolant Pump Housing And Oil Cooler Housing.
CBR 2480-72025-11-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Resolution Process for Locked Control Unit(s)
CBR 2517-1 1020252025-11-03. Service bulletin. VISIBILITY/WIPER. CBR - Wiper Linkage Inspection.
CBR 2516-3 1020252025-11-03. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY/WIPER; VEHICLE SPEED CONTROL. CBR - CMS Black Screen Troubleshooting.
CBR 2514-1 1020252025-11-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Lost Communication to Alternator Message.
S4579 0920252025-10-01. Service campaign. UNKNOWN OR OTHER; POWER TRAIN. Mack Trucks has identified that certain truck models may have been assembled with incorrect center bearing mounting hardware and could have been torqued incorrectly. Improper torque can increase the risk of hardware failure. To address this issue, please follow the instructions in this document to replace and correctly torque the center bearing and center bearing mounting bracket hardware.
CBR 2503 0920252025-10-01. Service bulletin. SERVICE BRAKES. The purpose of this CBR is to outline the steps for adjusting brake pedal freeplay following Foot Brake Modulator (FBM) replacement or when diagnostic code C10C3-77is present.

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