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Service bulletin ITS-4537

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 id10036961
Published by NHTSA2011-04-23
Manufacturer's numberITS-4537
Manufacturer's date2011-04-01
NHTSA componentEQUIPMENT; SERVICE BRAKES

NHTSA's summary

NEW FLYER: PURGE MOISTURE FROM SR-1 VALVE. FOLLOW PROCEDURE LISTED IN BULLETIN. MODELS INCLUDE 60FT, DSL, AND ELEC. NO MODEL YEARS ARE LISTED. *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

Brakes, Equipment and accessories

Vehicles listed
NEW FLYER NEW FLYER

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