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Service bulletin WB-13-04

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 id10051650
Published by NHTSA2013-03-27
Manufacturer's numberWB-13-04
Manufacturer's date2013-02-01
NHTSA componentEQUIPMENT:APPLIANCE:AIR CONDITIONER; ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN

NHTSA's summary

PREVOST: WHEN AUXILIARY FAN FAILS RUN, AN A/C LOW PRESSURE MESSAGE WILL APPEAR ON DASHBOARD AND A BYPASS PIPING AND VALVE ASSEMBLY MAY BE ADDED TO RESOLVE THE ISSUE. MODEL 2011-2013 H3-45 VIP SHELLS. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine, Equipment and accessories, Heating and air conditioning, Cooling fan, Cooling system

Vehicles listed
PREVOST H3-45 VIP2011 to 2013

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