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Service bulletin 4VZ-E9QSR-09

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 id10127590
Published by NHTSA2018-01-29
Manufacturer's number4VZ-E9QSR-09
Manufacturer's date2017-08-18
NHTSA componentSUSPENSION; SUSPENSION:MULTIPLE AXLE:TORQUE ARM

NHTSA's summary

This service bulletin provides instructions on how to apply appropriate torque to rear suspension fasteners to resolve popping noises.

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

Vehicles listed
SPARTAN K22006 to 2018
SPARTAN K2 CHASSIS
SPARTAN K32006 to 2018
SPARTAN MM2006 to 2018

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