{"nhtsa_id":10033115,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2010-07-08","date":"2008-06-30","document_id":"TSB-0121-08","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT","mfr_system":null,"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","document":null,"url":"https://open.wenmarpro.com/bulletins/10033115","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"differential","name":"Differential","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"TOYOTA","model":"TUNDRA","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_toyota_tundra","2008_toyota_tundra"]}],"as_of":"2026-10-19","note":"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.","attribution":[]}