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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

Only bulletins with component: Body and frame are shown. Show all

Bulletins, newest first
CBR 2575-1 2026042026-05-05. Service bulletin. STRUCTURE:BODY; UNKNOWN OR OTHER. CBR - Mack Chassis - Dash Panel Cracking at Mounting to BIW.
CBR 2432-2 2026012026-02-03. Service bulletin. STRUCTURE:BODY; VISIBILITY/WIPER. CBR - Mack Chassis - AN And GR Models - Door Glass Shattering.
S4548 2025062025-07-01. Service campaign. STRUCTURE:BODY; UNKNOWN OR OTHER. Mack Trucks has determined that certain model year 2020 to 2022 Anthem trucks could experience excessive wear on the hood latch pins causing the hood to rattle during normal vehicle operation.
CBR-2016 2024012024-02-02. Service bulletin. STRUCTURE; SUSPENSION. CBR: Frame Or Cab Lean
M-821-028 2023082023-09-06. Service bulletin. STRUCTURE; LATCHES/LOCKS/LINKAGES. TSB: Hood Latch Assembly, Retrofit
KC-4262022-02-04. Service bulletin. EQUIPMENT; STRUCTURE:BODY:HOOD; VISIBILITY. Mack Chassis - Anthem (AN) - Hood Mounted Mirror Repair; Mirror Covers Loose, Rattling, Vibrating
KC-3272022-02-04. Service bulletin. STRUCTURE. Mack Chassis - Anthem ( AN ) - Hood Assembly; Crack Repair - US17+OBD16 and Newer Emissions
KC-21372021-11-05. Service bulletin. STRUCTURE:BODY:DOOR; STRUCTURE. Mack Chassis - Anthem (AN) Water Leak Around Door
KC-21372021-10-01. Service bulletin. STRUCTURE. Mack Chassis - Anthem (AN) Water Leak Around Door
PI08882019-08-19. Service bulletin. STRUCTURE. For certain MACK CXU and AN trucks built between 08/29/2016 and 01/25/2019, a new improved torque procedure has been introduced to maintain and distribute torque properly on the hardware attaching the Link auxiliary axle to the frame mounted brackets. Follow the repair instructions outlined in this document for re-torquing the indicated nuts or bolts.
K713130152019-02-19. Service bulletin. STRUCTURE:BODY:HOOD. Hood Insulation Separating From Hood, Insulation Installation Instructions

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