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Service bulletin K33997396

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 id10143858
Published by NHTSA2018-08-20
Manufacturer's numberK33997396
Manufacturer's date2018-07-24
NHTSA componentELECTRICAL SYSTEM; STRUCTURE

NHTSA's summary

Equipped With A Body Builder Module ( BBM ) - Bodybuilder Applications Receiving Erratic Vehicle Road Speed Signal; Vehicle Speed Reading Incorrectly From BBM At Low Road Speeds, Jumping/Spiking/Changing Reading During Steady Operation

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

Body and frame, Electrical system

Vehicles listed
VOLVO VNL
VOLVO VNM
VOLVO VNR
VOLVO VNX2013 to 2018
VOLVO VT

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