{"nhtsa_id":10030404,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2009-09-29","date":"2009-05-27","document_id":"TIB-26-16","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"KENWORTH SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. AUTOMATIC TRANSMISSION SUPPORT SPRING BRACKET WELD CAMPAIGN. C500 AND K500 WITH FRONT DRIVE AXLES AND ALLISON WORLD SERIES AUTOMATIC TRANSMISSIONS, ARE AFFECTED. INSPECT AND, IF NECESSARY, SERVICE ALL CHASSIS AFFECTED EVEN IF THE CUSTOMER HAS NO ISSUE WITH THE CHASSIS. CSC LETTER REC'D. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10030404","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"KENWORTH","model":"C500","year_from":2008,"year_to":2009,"match":null,"vehicle_ids":[]},{"make":"KENWORTH","model":"K500","year_from":2008,"year_to":2008,"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":[]}