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Service bulletin TSB-0121-08

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 id10033115
Published by NHTSA2010-07-08
Manufacturer's numberTSB-0121-08
Manufacturer's date2008-06-30
NHTSA componentPOWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT

NHTSA's summary

TOYOTA: SOME FOUR WHEEL DRIVE TRUCKS MAY EXHIBIT A CONDITION WHERE A CYCLIC NOISE CAN BE HEARD FROM THE FRONT OF THE VEHICLE BETWEEN 15 AND 30 MPH (24-48KM/H) ONLY WHEN DRIVING IN 2WD. THIS NOISE CAN BE DESCRIBED AS A HOWL, GROWL, GRIND, OR DRONE NOISE. PRODUCTION CHANGES HAVE BEEN IMPLEMENTED TO HELP PREVENT THIS NOISE. *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, Differential

Vehicles listed
TOYOTA TUNDRA2007, 2008

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