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Service bulletin SIL 18-WT-14 Rev

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 id10128851
Published by NHTSA2018-02-21
Manufacturer's numberSIL 18-WT-14 Rev
Manufacturer's date2018-01-22
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Announces release of and part numbers for revised oil cooler parts and service information related to the parts

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
ALLISON TRANSMISSION

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