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Service bulletin KC-2055

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 id10180412
Published by NHTSA2020-09-30
Manufacturer's numberKC-2055
Manufacturer's date2020-09-25
NHTSA componentFUEL SYSTEM, DIESEL

NHTSA's summary

Mack Check Fuel Filter – Instrument Cluster Warning Message And Icon - US20 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

Fuel system

Vehicles listed
MACK ENGINE & ENGINE COOLING

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