{"nhtsa_id":10201697,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-10-01","date":"2019-12-11","document_id":"SM1906","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"The intent of Service Memorandum SM1906 is to make Blue Bird dealers aware that Cummins has released a calibration update improvement to reduce occurrence of “Engine fault codes 3555 and 3556” on Cummins diesel engines with the following base ECM calibrations, \"HC80145 thru HC80250 and HB80104 thru HC80195\"","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10201697-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10201697-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10201697","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BLUE BIRD","model":"ALL AMERICAN","year_from":2017,"year_to":2019,"match":null,"vehicle_ids":[]},{"make":"BLUE BIRD","model":"ALL AMERICAN SCHOOL BUS","year_from":2020,"year_to":2020,"match":null,"vehicle_ids":[]},{"make":"BLUE BIRD","model":"ALL AMERICAN TRANSIT BUS","year_from":2020,"year_to":2020,"match":null,"vehicle_ids":[]},{"make":"BLUE BIRD","model":"VISION","year_from":2017,"year_to":2019,"match":null,"vehicle_ids":[]},{"make":"BLUE BIRD","model":"VISION SCHOOL BUS","year_from":2020,"year_to":2020,"match":null,"vehicle_ids":[]},{"make":"BLUE BIRD","model":"VISION TRANSIT BUS","year_from":2020,"year_to":2020,"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":[]}