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Service bulletin SB-230-256

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 id10032493
Published by NHTSA2010-04-05
Manufacturer's numberSB-230-256
Manufacturer's date2009-10-01
NHTSA componentFUEL SYSTEM, DIESEL

NHTSA's summary

MACK TRUCK: AIR IN THE FUEL SYSTEM, CHECK. THIS INFORMATION COVERS CHECKING FOR AIR IN THE FUEL SYSTEM ON THE MACK MP7, MP8 AND MP10 ENGINES. 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

Fuel system

Vehicles listed
MACK MACK

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