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Service bulletin IS-19923

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 id10164160
Published by NHTSA2019-09-05
Manufacturer's numberIS-19923
Manufacturer's date2019-08-20
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

This instruction sheet explains how to replace HVAC MODULE on certain vehicles;

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

Vehicles listed
PREVOST H3-412004 to 2005
PREVOST H3-452004 to 2005
PREVOST H3-45VIP2004 to 2005
PREVOST W02003 to 2006
PREVOST W52003 to 2007
PREVOST WE2003 to 2007
PREVOST XLII-452000 to 2007

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