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Service bulletin FSB-233-004

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 id10041992
Published by NHTSA2011-11-22
Manufacturer's numberFSB-233-004
Manufacturer's date2011-10-01
NHTSA componentFUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

NHTSA's summary

MACK TRUCK: THERE IS FUEL LEAKAGE AT TANDEM FUEL PUMP. THE REPLACEMENT OF FUEL PUMP WILL NOT CORRECT WEEP HOLE LEAKAGE OF FLUID LEAK. CHP, CTP, CXP, CHU, CXU, GU, LEU, MRU, TD, CMM, CMH MODELS. *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, Fuel pump

Vehicles listed
MACK CHU2009 to 2010
MACK CTP2008
MACK CXP2008
MACK CXU2009 to 2010
MACK GU2009 to 2011
MACK LEU2009 to 2011
MACK MRU2009 to 2011
MACK PINNACLE (CHU)2011
MACK PINNACLE (CXU)2011
MACK TD7132010
MACK TD7142009 to 2010

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