{"nhtsa_id":621170,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-09-10","date":"2001-05-01","document_id":"2627","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"CERTAIN VEHICLES BUILT PRIOR TO JANUARY 1, 2000, WERE INCORRECTLY SPECIFIED AND BUILT WITHOUT A REAR TRANSMISSION-SUPPORT SPRING. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/621170","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"FREIGHTLINER","model":"BUSINESS CLASS","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"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":[]}