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Service bulletin WB14-06G

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 id10131563
Published by NHTSA2018-04-02
Manufacturer's numberWB14-06G
Manufacturer's date2014-05-13
NHTSA componentEQUIPMENT:APPLIANCE:AIR CONDITIONER

NHTSA's summary

On the vehicles affected by this bulletin, perform the following verifications and modifications on the A/C system: Bulletin is divided in five steps, refer to detailed instructions below. STEP 1: Unloader replacement (Step moved to Warranty Bulletin WB15-19) STEP 2: System vacuum, wiring update, remote pressure transducer and switch installation. STEP 3: Seal the evaporator compartment ventilation discharge duct. STEP 4: Check Evaporator expansion valve bulb position and MUX software version. STEP 5: Dynamic A/C system test to confirm all functions operate correctly.

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

Equipment and accessories, Heating and air conditioning

Vehicles listed
PREVOST H3-412012 to 2015
PREVOST H3-452012 to 2015
PREVOST H3-VIP2013 to 2015
PREVOST WE2013
PREVOST X32013 to 2015
PREVOST X3VIP2014 to 2015

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