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Service bulletin SB-33-24

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 id10029985
Published by NHTSA2009-07-22
Manufacturer's numberSB-33-24
Manufacturer's date2009-04-01
NHTSA componentWHEELS:LUGS/NUTS/BOLTS/STUDS; POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT:SEAL; POWER TRAIN:AXLE HUBS

NHTSA's summary

FREIGHTLINER TRUCK: STEER AXLE MAINTENANCE, AAC AND MERITOR 6000LB AND 8000LB AXLES: THIS BULLETIN IS TO PROVIDE INFORMATION ON THE RECOMMENDED MAINTENANCE PROCEDURE TO BE ADDED TO DTNA MAINTENANCE MANUALS FOR ALL MODELS WITH THESE AXLE RATINGS. IT IS RECOMMENDED THAT THESE PROCEDURES BE ADOPTED AS SOON AS POSSIBLE. 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

Transmission and driveline, Wheels, Axle, Wheel nuts and studs

Vehicles listed
FREIGHTLINER BUSINESS CLASS
FREIGHTLINER BUSINESS CLASS1991 to 2003
FREIGHTLINER BUSINESS CLASS M22000 to 2010

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