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Service bulletin TSB30-001-WST

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 id11002488
Published by NHTSA2024-06-28
Manufacturer's numberTSB30-001-WST
Manufacturer's date2024-06-04
NHTSA componentENGINE

NHTSA's summary

"Revised Technical Service Bulletin for Off-Road/Low Traction Throttle Parameter Update. Description of Revisions: This bulletin replaces the version dated 02/22/2024. The service bulletin number has been added in the title and the warranty statement is modified."

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

Engine

Vehicles listed
WESTERN STAR 47X2022 to 2024
WESTERN STAR 49X2021 to 2024
WESTERN STAR 57X2024

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