# Service campaign S4349 202501

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: 11013455
- Published by NHTSA: 2025\-02\-03
- Manufacturer's number: S4349 202501
- Manufacturer's date: 2025\-01\-01
- NHTSA component: ENGINE

## NHTSA's summary

SC \- Volvo Trucks has determined that certain VN model trucks equipped with a D13 Turbo Compound \(TC\) engine may experience TC unit failure due to an under\-torqued idler gear bracket.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11013455-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11013455-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2025 VOLVO VN
- 2025 VOLVO VNL \(4\)

JSON: [/v1/bulletins/11013455](/v1/bulletins/11013455)

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