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Service bulletin SB-293-11

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 id10043095
Published by NHTSA2012-02-22
Manufacturer's numberSB-293-11
Manufacturer's date2011-10-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE)

NHTSA's summary

MACK TRUCK: BULLETIN PROVIDING PROCEDURE INFORMATION ON EGR COOLER BEING PRESSURE TESTED ON THE ENGINE AND ALSO REMOVED FROM THE ENGINE. NO MODEL OR MODEL YEARS LISTED. *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, Exhaust and emissions, EGR valve

Vehicles listed
MACK MACK

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