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Service bulletin 2624

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 id622344
Published by NHTSA2001-10-16
Manufacturer's number2624
Manufacturer's date2001-01-01
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES

NHTSA's summary

GENERAL INFORMATION STATING THAT THE HAYDEN AIR-TO-OIL TRANSMISSION CCOLERS ARE SECURED TO A MOUNTING BRACKET VIA BOLTS THROUGH RUBBER BLOCKS. SOME COOLERS MAY HAVE A TUBE-TO-HEADER DIMENSION THAT IS TOO LARGE, AND COULD RESULT IN THE COOLER COMING LOOSE FROM THE MOUNTING BRACKET, EVEN IF THE CORRECT TORQUE VALUE HAD BEEN ACHIEVED. *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
FREIGHTLINER ARGOSY
FREIGHTLINER CENTURY
FREIGHTLINER COLUMBIA

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