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Service bulletin 4640

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 id10022996
Published by NHTSA2007-10-10
Manufacturer's number4640
Manufacturer's date2006-09-01
NHTSA componentAIR BAGS:ON-OFF SWITCH ASSEMBLY

NHTSA's summary

AIRBAG CLOCK SPRING MODIFICATION FOR STEERING WHEELS - ON ARGOSY COE, COLUMBIA, CORONADO, AND CENTURY CLASS CONVENTIONAL. YEAR UNKNOWN. *NJ

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

Air bags

Vehicles listed
FREIGHTLINER ARGOSY
FREIGHTLINER CENTURY
FREIGHTLINER COLUMBIA
FREIGHTLINER CORONADO

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