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Service bulletin SB-PI-0691

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 id10032744
Published by NHTSA2010-05-07
Manufacturer's numberSB-PI-0691
Manufacturer's date2009-12-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER

NHTSA's summary

MACK TRUCK: REPLACEMENT OF THE TURBOCHARGER AND MOUNTING HARDWARE ON CERTAIN MP8 ENGINE EQUIPPED TRUCKS. THE TURBOCHARGER AND ASSOCIATED MOUNTING HARDWARE MUST BE CHANGED ON ALL TRUCKS INVOLVED IN THIS CAMPAIGN. *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, Turbocharger or supercharger

Vehicles listed
MACK CHU2006 to 2008
MACK CXU2006 to 2008
MACK GU2006 to 2010

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