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Service campaign S4578 072025

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService campaign
NHTSA id11021343
Published by NHTSA2025-08-04
Manufacturer's numberS4578 072025
Manufacturer's date2025-07-01
NHTSA componentSTRUCTURE:BODY; UNKNOWN OR OTHER

NHTSA's summary

SC - Mack Trucks has determined that certain AN models were assembled without a crossmember that was needed for the pusher axle.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Body and frame

Vehicles listed
MACK ANTHEM (AN)2026 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
26V6310002026-10-01. STRUCTURE:BODY:BUMPERS:ACTIVE SHUTTERS/GRILL; STRUCTURE:EXTERIOR TRIM

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
CBR 2540-7 2026042026-05-05. Service bulletin. CBR - Upper Bunk Restraint System – Plastic Gable Retention Field Fix.
CBR 2540-5 2026012026-02-03. Service bulletin. CBR - Upper Bunk Restraint System – Plastic Gable Retention Field Fix.
CBR 2432-2 2026012026-02-03. Service bulletin. CBR - Mack Chassis - AN And GR Models - Door Glass Shattering.
CBR 2540 2025122026-01-06. Service bulletin. Upper Bunk Restraint System – Plastic Gable Retention Field Fix