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Service bulletin L544, Rev. NN

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 id10129581
Published by NHTSA2018-03-05
Manufacturer's numberL544, Rev. NN
Manufacturer's date2018-01-01
NHTSA componentTRAILER HITCHES; SUSPENSION

NHTSA's summary

Operation Name: Hendrickson Trailer Commercial Vehice Systems Document Name: Ordering Guide - VANTRAAX Slider Suspension Summary: This document provides a guide of available specifications and options when ordering Hendrickson VANTRAAX slider suspension and axle systems.

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, Trailer hitch

Vehicles listed
HENDRICKSON HENDRICKSON

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