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Service bulletin 500

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 id608233
Published by NHTSA1999-11-10
Manufacturer's number500
Manufacturer's date1999-05-31
NHTSA componentSTRUCTURE:FRAME AND MEMBERS

NHTSA's summary

CONCERNS WITH STRUCTURAL CRACKS OBSERVED AT THE CAB A-PILLARS ON CAB / SLEEPER UNITS BUILT PRIOR TO APRIL 4, 1997 AND DAY CABS BUILT PRIOR TO NOVEMBER 1, 1997. *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

Body and frame

Vehicles listed
WESTERN STAR WESTERN STAR

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