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Service bulletins for the 2025 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.

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

By type

By component

By trouble code

Only bulletins with type: Service campaign are shown. Show all

Bulletins, newest first
S4533 2026082026-09-02. Service campaign. ENGINE. Mack Trucks has determined that certain AN model trucks equipped with an MP8 Turbo Compound (TC) engine may experience TC Double Idler Gear failure due to incorrect bearing preload. TC units within this population are suspected to be affected, which could result in failure and potential engine damage. For the affected vehicle population, please follow the instructions provided below to remove the TC unit, replace the double idler gear with a new one, and reinstall the TC unit.
S4373 0220262026-03-03. Service campaign. STRUCTURE:BODY. SC - Mack Trucks has determined that certain Mack sleeper cab assemblies were possibly manufactured with an insufficient number of welds across the rear flange of the upper header
S4342 0220262026-03-03. Service campaign. FUEL/PROPULSION SYSTEM. SC - Mack Trucks has determined that a select group of trucks were built with an AHI Module fuel pressure sensor which does not meet our specifications.
S4270 2025122026-01-06. Service campaign. ELECTRICAL SYSTEM. SC - Electric Exhaust Heater Control Unit Update
S4632 1020252025-11-03. Service campaign. SEAT BELTS. SC - The vehicle’s seat belt tether may have been assembled with incorrect hardware.
S4533 0720252025-08-04. Service campaign. ENGINE. SC - Mack Trucks has determined that certain AN model trucks equipped with an MP8 Turbo Compound (TC) engine may experience TC Double Idler Gear failure due to incorrect bearing preload.
S4404 2025042025-05-05. Service campaign. ELECTRICAL SYSTEM. SC - Mack Trucks has determined that certain Anthem and Granite model trucks have a mislabeled Electronic Fuse & Relay Center (EFRC) Cover.
S4373-2025022025-03-03. Service campaign. STRUCTURE:BODY; UNKNOWN OR OTHER. Mack Trucks has determined that certain Mack sleeper cab assemblies were possibly manufactured with an insufficient number of welds across the rear flange of the upper header. The reduced number of welds could lower the designed cab integrity.
S4088 2024092024-10-04. Service campaign. POWER TRAIN. Service Campaign: Interaxle Driveline Torque
S0488 2024072024-08-01. Service campaign. POWER TRAIN. Service Campaign: Interaxle Driveline Torque

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