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Service bulletin 19CSA-21

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 id10169712
Published by NHTSA2020-01-03
Manufacturer's number19CSA-21
Manufacturer's date2020-01-02
NHTSA componentENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT

NHTSA's summary

Customer Service Announcement for service locations relaying that Service Pack 1 is available for DiagnosticLink 8.11.

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

Electrical system, Engine, Equipment and accessories, Software

Vehicles listed
FREIGHTLINER FREIGHTLINER
THOMAS BUILT BUSES THOMAS BUILT BUSES
WESTERN STAR WESTERN STAR

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