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Service bulletin 81401WS001

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 id620535
Published by NHTSA2001-08-13
Manufacturer's number81401WS001
Manufacturer's date2001-04-10
NHTSA componentELECTRICAL SYSTEM:IGNITION:SWITCH

NHTSA's summary

CONCERNS THAT THE COLE HERSEE CAB DISCONNECT SWITCH MAY BE PRONE TO CORROSION WHICH COULD RESULT IN A TRUCK NO-START CONDITION. *TT

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

Electrical system, Ignition

Vehicles listed
WESTERN STAR WESTERN STAR

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