# 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.

- Type: Service campaign
- NHTSA id: 11021343
- Published by NHTSA: 2025\-08\-04
- Manufacturer's number: S4578 072025
- Manufacturer's date: 2025\-07\-01
- NHTSA component: STRUCTURE: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

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021343-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021343-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Body and frame

## Vehicles listed

- 2026 MACK ANTHEM \(AN\)

## Recalls for the same vehicles and component

- [26V631000](/recalls/nhtsa/26V631000.md), 2026-10-01: STRUCTURE:BODY:BUMPERS:ACTIVE SHUTTERS/GRILL; STRUCTURE:EXTERIOR TRIM

## Other bulletins for the same vehicles and component

- [CBR 2540\-7 202604](/bulletins/11032088.md), 2026-05-05, Service bulletin: SEAT BELTS; STRUCTURE:BODY; UNKNOWN OR OTHER. CBR \- Upper Bunk Restraint System – Plastic Gable Retention Field Fix.
- [CBR 2540\-5 202601](/bulletins/11028048.md), 2026-02-03, Service bulletin: UNKNOWN OR OTHER; STRUCTURE:BODY. CBR \- Upper Bunk Restraint System – Plastic Gable Retention Field Fix.
- [CBR 2432\-2 202601](/bulletins/11028041.md), 2026-02-03, Service bulletin: STRUCTURE:BODY; VISIBILITY/WIPER. CBR \- Mack Chassis \- AN And GR Models \- Door Glass Shattering.
- [CBR 2540 202512](/bulletins/11027012.md), 2026-01-06, Service bulletin: STRUCTURE:BODY; UNKNOWN OR OTHER. Upper Bunk Restraint System – Plastic Gable Retention Field Fix

JSON: [/v1/bulletins/11021343](/v1/bulletins/11021343)

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