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Service bulletin TSB210034

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 id11021541
Published by NHTSA2025-08-06
Manufacturer's numberTSB210034
Manufacturer's date2025-07-28
NHTSA componentENGINE

NHTSA's summary

This Technical Service Bulletin describes the verification and resolution of an audible fuel knock noise during the first 160 km [ 100 miles ] is a result of incomplete fueling adaption learning and is not an indication of a malfunction. This is an update to a previously submitted communication.

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

Engine

Vehicles listed
CUMMINS L9

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