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Service bulletin TechTalk7667

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 id10180432
Published by NHTSA2020-09-30
Manufacturer's numberTechTalk7667
Manufacturer's date2020-09-10
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Tech Talk discussion on M2 firetruck surging on high idle.

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
FREIGHTLINER BUSINESS CLASS M22019

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