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Service bulletin INTERIM SERVICE

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 id10100792
Published by NHTSA2017-05-25
Manufacturer's numberINTERIM SERVICE
Manufacturer's date2015-10-19
NHTSA componentSERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER

NHTSA's summary

SERVICE BULLETIN - HONDA IS LAUNCHING A SAFETY RECALL OF 2001-2015 GL1800/A AND GL1800B/BD MOTORCYCLES. HONDA HAS DETERMINED THAT UNDER CONDITIONS WHERE THE BRAKE FLUID IS NOT REPLACED ACCORDING TO THE MAINTENANCE SCHEDULE (EVERY 12,000 MILES OR TWO YEARS, WHICHEVER COMES FIRST), SOLID DEPOSITS MAY FORM WITHIN THE BRAKE FLUID, LEADING TO COMPONENT MALFUNCTION WITHIN THE SECONDARY MASTER CYLINDER, WHICH MAY CAUSE THE REAR BRAKE TO DRAG.

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

Brakes, Brake master cylinder

Vehicles listed
HONDA GL18002001 to 2010
HONDA GL18002012 to 2015
HONDA GL1800A2001 to 2010
HONDA GL1800A2012
HONDA GL1800B2013 to 2015
HONDA GL1800BD2013 to 2015

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