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Service bulletin SRA-M-0374

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 id10055138
Published by NHTSA2014-04-16
Manufacturer's numberSRA-M-0374
Manufacturer's date2014-01-08
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:DIESEL; EQUIPMENT:ELECTRICAL

NHTSA's summary

MACK: THERE IS AN AUTOMATIC ELECTRIC OVER SPEED PROTECTION SHUTDOWN THAT MONITORS DIESEL ENGINE RPM AND ENGINE SHUTDOWN IN EVENT OF AN OVER SPEED CONDITION, WHICH MAY BE CAUSED BY GASES, IN TRUCKS, IN OFF ROAD AREAS AND PULLED THROUGH AIR INTAKE. MODEL 2014 CHU, CXU, 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

Engine, Equipment and accessories

Vehicles listed
MACK CHU2014
MACK GRANITE (GU)2014
MACK PINNACLE (CXU)2014

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