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Service bulletin S7448

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 id10172205
Published by NHTSA2020-03-09
Manufacturer's numberS7448
Manufacturer's date2020-02-04
NHTSA componentELECTRICAL SYSTEM:IGNITION; EQUIPMENT; ENGINE

NHTSA's summary

IGNITION CYLINDER REPLACEMENT-CUMMINS ENGINE

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

Electrical system, Engine, Equipment and accessories, Ignition

Vehicles listed
MACK ANTHEM (AN)2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
MACK GRANITE (GR)2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
MACK GRANITE (GU)2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
MACK GU2018

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

Other bulletins for the same vehicles and component
KC-2822022-01-06. Service bulletin. Mack Chassis - Theft Deterrent System (TDS) Not Working; TDS Does Not Accept Password, Lockout Prevents Vehicle Operation - Model Years 2018 And 2019
K846823082019-04-22. Service bulletin. Mack Chassis - Theft Deterrent System (TDS) Not Working; TDS Does Not Accept Password, Lockout Prevents Vehicle Operation - Model Years 2018 And 2019