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Service bulletin Dealer Letter -

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 id10197423
Published by NHTSA2021-06-14
Manufacturer's numberDealer Letter -
Manufacturer's date2014-08-14
NHTSA componentELECTRICAL SYSTEM; EQUIPMENT; SERVICE BRAKES, HYDRAULIC

NHTSA's summary

Pierce has been notified by Fire Research Corp that certain pressure governor models require a firmware update (no parts, Programming only).

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, Equipment and accessories

Vehicles listed
PIERCE PIERCE

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