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Service bulletin PI-0787

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 id10044338
Published by NHTSA2012-06-13
Manufacturer's numberPI-0787
Manufacturer's date2012-06-01
ReplacesPI-0787-2
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES

NHTSA's summary

MACK: CERTAIN TRUCKS HAD O RING INSTALLED INCORRECTLY ON TRANSMISSION COOLER LINE FITTINGS DURING ASSEMBLY, THEREBY CAUSING FLUID FROM TRANSMISSION TO BE LOSS AND/OR DAMAGE TO TRANSMISSION, PREMATURELY. *PE UPDATED 7/31/12. *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

Transmission and driveline, Automatic transmission

Vehicles listed
MACK GRANITE (GU)2012
MACK PINNACLE (CHU)2012
MACK PINNACLE (CXU)2012
MACK TD2012

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