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Service bulletin K75024255

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 id10125184
Published by NHTSA2017-12-14
Manufacturer's numberK75024255
Manufacturer's date2017-11-03
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

During extended periods of idling, engine speed may increase for a short time without any external command to do so.

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 CHU
MACK CXU
MACK GU
MACK LEU2007 to 2017
MACK LR
MACK MRU2007 to 2018
MACK TD

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