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Service bulletin EC0017

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 id10117930
Published by NHTSA2017-09-22
Manufacturer's numberEC0017
Manufacturer's date2017-08-21
NHTSA componentENGINE

NHTSA's summary

MACK Trucks has determined that certain 2013 through 2015 year model CHU, CXU, GU and MRU trucks equipped with a MP8 model engine may be equipped with an improperly functioning on-board emission-related diagnostic system.

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

Engine

Vehicles listed
MACK CHU2013 to 2015
MACK CXU2013 to 2015
MACK GU2013 to 2015
MACK MRU2013 to 2015

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