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Service bulletin TechTalk4374

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 id10180137
Published by NHTSA2020-09-25
Manufacturer's numberTechTalk4374
Manufacturer's date2020-09-11
NHTSA componentVISIBILITY; STRUCTURE

NHTSA's summary

Tech Talk Discussion for M2 mirror shake. Vehicle has excessive mirror shake going down the road.

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

Body and frame, Glass, wipers and mirrors

Vehicles listed
FREIGHTLINER BUSINESS CLASS M22018 to 2021

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