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Service bulletin SB-60-23

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 id10039647
Published by NHTSA2011-08-08
Manufacturer's numberSB-60-23
Manufacturer's date2011-01-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:DIESEL

NHTSA's summary

DAIMLER TRUCKS: SOME WESTERN STAR VEHICLES MAY HAVE ENGINE COVER INSULATION COME LOOSE AND FALL DOWN ON THE ENGINE. *RM

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine

Vehicles listed
WESTERN STAR CONSTELLATION2009 to 2012

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