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Service bulletin PI-0799

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 id10048399
Published by NHTSA2012-12-18
Manufacturer's numberPI-0799
Manufacturer's date2012-11-01
NHTSA componentWHEELS; TIRES

NHTSA's summary

MACK TRUCK: THE SUPPORT BRACKETS, USED WITH WIDE BASE WHEEL/TIRE COMBINATIONS EQUIPMENT, PROVIDE ADDITIONAL STRENGTH THAT IS REQUIRED WITH LONGER CAM TUBES, WERE NOT INSTALLED AT FACTORY, AND NEED TO BE REPLACED. MODELS CHU, CXU, GU. NO 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

Tires, Wheels

Vehicles listed
MACK CHU2013
MACK GRANITE (GU)2012 to 2013
MACK PINNACLE (CHU)2012
MACK PINNACLE (CXU)2012 to 2013

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