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Service bulletin TechTalk8106

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 id10187906
Published by NHTSA2021-03-03
Manufacturer's numberTechTalk8106
Manufacturer's date2021-02-04
NHTSA componentEXTERIOR LIGHTING

NHTSA's summary

Tech Talk discussion on 2020 Western Star 4800 signal lights dim to start.

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

Lighting

Vehicles listed
WESTERN STAR 48002020

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

Other bulletins for the same vehicles and component
TechTalk76982020-10-01. Service bulletin. Tech Talk discussion on dim brake lights.