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Service bulletin KC-397

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 id10201711
Published by NHTSA2021-10-01
Manufacturer's numberKC-397
Manufacturer's date2021-09-01
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Mack Chassis - SNM16-031 US'14 (GHG) MP8 Two Piece Valve Cover (Corroded Screws)

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 LR
MACK TD

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