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Service bulletin 2631

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 id631366
Published by NHTSA2002-05-23
Manufacturer's number2631
Manufacturer's date2002-02-01
NHTSA componentPOWER TRAIN:MANUAL TRANSMISSION

NHTSA's summary

SUBJECT REGARDING ALL GENERATION LL AUTOSHIFT TRANSMISSIONS PROGRAMMED AT THE MANUFACTURING PLANT RECEIVED THE DEFAULT SHIFT POINT CALIBRATION FOR THAT MODEL TRANSMISSION. *YH

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, Manual transmission

Vehicles listed
FREIGHTLINER ARGOSY
FREIGHTLINER BUSINESS CLASS
FREIGHTLINER CARGO
FREIGHTLINER CENTURY
FREIGHTLINER COLUMBIA
FREIGHTLINER CONDOR
FREIGHTLINER CONVENTIONAL
FREIGHTLINER FLB
FREIGHTLINER FLC112

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