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Service bulletin IS-19901E

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 id10231095
Published by NHTSA2023-02-04
Manufacturer's numberIS-19901E
Manufacturer's date2023-01-17
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

ELECTRIC FAN DRIVE COOLING SYSTEM CONVERSION WITH BOSCH ALTERNATOR. REVISION: E Note added regarding power cable connection

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 X3-452011 to 2017
PREVOST X3-45 COACH2011 to 2016

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