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Service bulletin 18-17

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 id10136228
Published by NHTSA2018-05-07
Manufacturer's number18-17
Manufacturer's date2018-03-23
NHTSA componentEQUIPMENT; ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN

NHTSA's summary

Fix-As-Fail - Vehicles built with X15 engine and 2 gallon washer reservoir may develop a leak caused by rubbing on fan ring support bracket.

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, Equipment and accessories, Cooling fan, Cooling system

Vehicles listed
PACCAR PETERBILT

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