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Service bulletin TechTalk6684

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 id10187938
Published by NHTSA2021-03-02
Manufacturer's numberTechTalk6684
Manufacturer's date2021-02-10
NHTSA componentVEHICLE SPEED CONTROL

NHTSA's summary

Tech Talk discussion on Road Speed Governor.

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

Throttle and cruise control

Vehicles listed
FREIGHTLINER COLUMBIA GLIDER2013 (the catalog's model; the bulletin names a series or trim of it)

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