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Service bulletin PI-0798

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 id10048719
Published by NHTSA2013-01-04
Manufacturer's numberPI-0798
Manufacturer's date2012-10-01
NHTSA componentSERVICE BRAKES, AIR:SLACK ADJUSTERS; SUSPENSION:REAR:SHOCK ABSORBER

NHTSA's summary

MACK TRUCKS: INFORMATION ON REPLACEMENT PROCEDURES FOR THE SLACK ADJUSTER CONTROL ARM AND SUSPENSION SHOCK ABSORBER INTERFERENCE ON REAR/REAR DRIVE AXLE. MODEL 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

Brakes, Suspension, Shocks and struts

Vehicles listed
MACK GRANITE (GU)2012 to 2013
MACK GU2011

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