WenmarOpen by Wenmar Pro

Service bulletin IS-19910H

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 id10176973
Published by NHTSA2020-07-02
Manufacturer's numberIS-19910H
Manufacturer's date2020-06-17
NHTSA componentELECTRICAL SYSTEM; EQUIPMENT; ENGINE

NHTSA's summary

ELECTRIC FAN DRIVE COOLING SYSTEM CONVERSION WITH DELCO REMY ALTERNATOR Revision H: Parts obsolete: 050303, 391028, 562112 Replaced by: 830165 24V RED TELLTALE LIGHT MODULE QTY: 1x 381594 BRACKET, TELLTALE QTY:1x 561540 TAB TERMINAL, ST,16-14,1/4 INS QTY: 2x New holes drilled for cooling pack relocation

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

Electrical system, Engine, Equipment and accessories

Vehicles listed
PREVOST H3-412010 to 2018
PREVOST H3-452010 to 2018

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