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Service bulletin SMB-121

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 id10050479
Published by NHTSA2013-02-01
Manufacturer's numberSMB-121
Manufacturer's date2015-02-19
ReplacesSMB-121-C
NHTSA componentSUSPENSION:REAR; SUSPENSION:FRONT

NHTSA's summary

NEW FLYER: ANYTIME, ON AFFECTED AREAS, MAN (OEM) FASTENERS SHOULD BE REPLACED WHEN THEY ARE REMOVED OR ARE LOOSENED, WITH NEW ITEMS, ON REAR AND FRONT AXLES. MODELS LOW FLOOR XCELSIOR. NO MODEL YEARS LISTED. *PE UPDATED ON 7/9/2013. *KB UPDATED 9/9/15 *CN

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

Suspension

Vehicles listed
NEW FLYER NEW FLYER

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