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Service campaign SF718-Bulletin

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 campaign
NHTSA id11019809
Published by NHTSA2025-06-27
Manufacturer's numberSF718-Bulletin
Manufacturer's date2025-06-03
Campaign id or software versionSF718
NHTSA componentPOWER TRAIN

NHTSA's summary

Field Service Campaign for Transmission Oil Cooler Line Clearance

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

Transmission and driveline

Vehicles listed
WESTERN STAR 47X2025 to 2026
WESTERN STAR 49X2025 to 2026

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