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Service bulletin IS-19900

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 id10153353
Published by NHTSA2019-02-19
Manufacturer's numberIS-19900
Manufacturer's date2019-01-30
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

This instruction sheet explains how to convert H3 SERIES US10 vehicles equipped with Bosch Alternators to electric fan drive (EFD) cooling system

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
PREVOST H3-412011 to 2016
PREVOST H3-412018
PREVOST H3-452011 to 2018

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