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Service bulletin PI-0784

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 id10045120
Published by NHTSA2012-08-21
Manufacturer's numberPI-0784
Manufacturer's date2012-06-01
NHTSA componentENGINE

NHTSA's summary

MACK: RELOCATING VGT ACTUATOR CONNECTOR AND MOUNTING ARRANGEMENT TO ELIMINATE DIAGNOSTIC TROUBLE CODES (DTCS) AND SIGNAL MISSING FROM ENGINE VARIABLE GEOMETRY TURBOCHARGER ACTUATOR (ENGINE VGT ACTUATOR) CAUSING FRETTING OF CONNECTOR PINS. *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

Vehicles listed
MACK GRANITE (GU)2012
MACK MRU2012
MACK PINNACLE (CHU)2012
MACK PINNACLE (CXU)2012

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