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Service bulletin 386-846

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 id10057178
Published by NHTSA2015-04-24
Manufacturer's number386-846
Manufacturer's date2014-10-01
NHTSA componentENGINE

NHTSA's summary

MACK TRUCKS: 2013-2014 FUEL MANAGEMENT GAUGE, REPLACEMENT IS REQUIRED FOR THE FOLLOWING MODELS DUE TO FUEL GAUGE SENSOR NOT PROPERLY WORKING. *LJ

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine

Vehicles listed
MACK CHU2013 to 2014

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