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Service bulletin K42820008

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 id10174744
Published by NHTSA2020-05-06
Manufacturer's numberK42820008
Manufacturer's date2020-04-01
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Mack Chassis - Equipped With A Turbo-Compound Engine ONLY - Engine Stumble At Idle/Low NOx Idle - US17+OBD18 And Newer Emissions

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 CXU

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