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Service bulletin 551784

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 bulletin
NHTSA id11001376
Published by NHTSA2024-06-10
Manufacturer's number551784
Manufacturer's date2024-06-10
Campaign id or software version551784
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

According to Daimler Truck North America Field Service Campaign SF679A-D: "Certain vehicles with a Virtual Technician module (VT), were shipped without the VT module due to shortages from the module supplier."

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

Electrical system

Vehicles listed
DYNAMAX DX32023

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