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Service bulletin 4VZ-T5Z6X-03

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 id10117521
Published by NHTSA2017-09-14
Manufacturer's number4VZ-T5Z6X-03
Manufacturer's date2017-02-09
NHTSA componentSUSPENSION:FRONT:SPRINGS:AIR SUSPENSION:SPRINGS/BAGS; SUSPENSION:REAR:SPRINGS:AIR SUSPENSION SYSTEM:SPRINGS/BAGS

NHTSA's summary

This service bulletin provides instructions on how to replace air springs that may be subject to a blistering condition.

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

Suspension, Air suspension

Vehicles listed
SPARTAN ALTERED CHASSIS CABS2011 to 2016

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