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Service bulletin TP-H633 Rev I

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 id10162801
Published by NHTSA2019-07-15
Manufacturer's numberTP-H633 Rev I
Manufacturer's date2019-03-01
NHTSA componentSUSPENSION; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); EQUIPMENT

NHTSA's summary

Operation Name: Hendrickson Auxiliary Axle Systems Document Name: Technical Procedure - COMPOSILITE SC Steerable Auxiliary Axle Suspension Systems; Installation & Preventive Maintenance Procedure Summary: This document provides installation and preventive maintenance procedures for Hendrickson COMPOSILITE SC auxiliary axle suspension 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

Driver assistance, Equipment and accessories, Suspension

Vehicles listed
HENDRICKSON HENDRICKSON

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