{"nhtsa_id":609792,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2000-04-10","date":"1999-10-27","document_id":"10TR99","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"SUBJECT REGARDING FLUID / FILTER CHANGE RECOMMENDATIONS AND NEW SYNTHETIC FLUID ANNOUNCEMENT FOR BLUE BIRD BUSES EQUIPPED WITH AN ALLISON AUTOMATIC TRANSMISSION. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/609792","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"BLUE BIRD","model":"BLUE BIRD","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":[]}