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Service bulletin P56047

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 id10145095
Published by NHTSA2018-10-01
Manufacturer's numberP56047
Manufacturer's date2018-08-01
NHTSA componentEQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; SUSPENSION; TRAILER HITCHES

NHTSA's summary

Operation Name: Hendrickson Trailer Commercial Vehical Systems Document Name: Product Update - Lift Axle Control Kits Summary: This document announces a design change to the vent components on its Lift Axle Control Kits for use on applicable Hendrickson trailer integrated 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

Equipment and accessories, Suspension, Trailer hitch

Vehicles listed
HENDRICKSON HENDRICKSON

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