WenmarOpen by Wenmar Pro

Service bulletin 99-040

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 id10169708
Published by NHTSA2020-01-04
Manufacturer's number99-040
Manufacturer's date2019-12-12
NHTSA componentEQUIPMENT:ELECTRICAL; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

Information Only – This bulletin provides guidance when using DealerNet and determining the appropriate Diagnostic tool to use and information.

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

Electrical system, Equipment and accessories, Software

Vehicles listed
KENWORTH KENWORTH
PETERBILT PETERBILT

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