WenmarOpen by Wenmar Pro

Service bulletin FSB-284-063

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 id10058903
Published by NHTSA2015-12-16
Manufacturer's numberFSB-284-063
Manufacturer's date2015-09-01
NHTSA componentELECTRICAL SYSTEM:SOFTWARE; ENGINE; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

NHTSA's summary

MACK TRUCK: DIAGNOSTIC TROUBLE CODES (DTC) ILLUMINATES INFORMATION DISPLAY WHEN TWO OR MORE ACTIVE DTC ARE SIMULTANEOUS AND ENGINE ECM NEED CALIBRATION TRANSFER FROM ELECTRONIC SYSTEMS DATABASE AND NETWORK (ESDN), USING INSITE, AS REQUIRED, FOR CORRECTION. MODEL 2012-15 GU. *PE

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

Electrical system, Engine, Instrument cluster, Software

Vehicles listed
MACK GRANITE (GU)2012 to 2015

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