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Service bulletin 33

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 id10003075
Published by NHTSA2003-10-07
Manufacturer's number33
Manufacturer's date2003-08-15
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES

NHTSA's summary

REPORTS THAT THE ALLISON TRANSMISSION HAVE BEEN RUNNING HOT. ALLISON HAS ADVISED THAT THS IS THE RESULT OF THE TRANSMISSION FLUID RUNNING THROUGH THE TRANSMISSION COOLER IN THE SAME DIRECTION AS THE ENGINE COOLANT. *TT

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
THOMAS SAF-T-LINER

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