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Service bulletin TIB13-050

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 id10165590
Published by NHTSA2019-10-04
Manufacturer's numberTIB13-050
Manufacturer's date2019-09-27
NHTSA componentSERVICE BRAKES, HYDRAULIC; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE

NHTSA's summary

Information Only T170, T270, and T370 with hydraulic ABS brakes require a programming harness. The harness is now a required or recommended tool.

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

Brakes, Anti-lock brakes

Vehicles listed
KENWORTH T1702016 to 2018
KENWORTH T2702016 to 2020
KENWORTH T3702016 to 2020

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