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Service bulletin SP14-313

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 id10110700
Published by NHTSA2017-08-04
Manufacturer's numberSP14-313
Manufacturer's date2014-09-12
NHTSA componentELECTRICAL SYSTEM; POWER TRAIN; SERVICE BRAKES, HYDRAULIC

NHTSA's summary

On the vehicles affected by this special bulletin, a 7psi pressure switch must be added to the transmission retarder circuit to activate the retarder when vehicle brakes are applied, increasing drivetrain components reliability.

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

Brakes, Electrical system, Transmission and driveline

Vehicles listed
PREVOST X32012 to 2014

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