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
Only bulletins with type: Service campaign are shown. Show all
| S4757 022026 | 2026-03-03. Service campaign. ENGINE. SC - Certain model AN(4)’s and PR’s could experience DEF leaks or crystallization due to the installation of incorrect fasteners for the Urea Dosage Valve. |
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| SC S4751 202601 | 2026-02-03. Service campaign. ELECTRICAL SYSTEM. CBR - Driver Environment Control Module Replacement. |
| SC S4742 202601 | 2026-02-03. Service campaign. ENGINE. CBR MCO/VECI Label Reprint. |
| S4579 092025 | 2025-10-01. 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. |
| S4578 072025 | 2025-08-04. Service campaign. STRUCTURE:BODY; UNKNOWN OR OTHER. SC - Mack Trucks has determined that certain AN models were assembled without a crossmember that was needed for the pusher axle. |
| S4574 072025 | 2025-08-04. Service campaign. POWER TRAIN. SC - Mack Trucks has identified that certain truck models may have been assembled with incorrectly torqued interaxle prop shaft U-joint hardware. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.