{"nhtsa_id":10054658,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2014-02-12","date":"2013-12-11","document_id":"SM-1317","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"BLUE BIRD: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. AN UPGRADE IS ADVISED FOR UEGO SENSORS, IN CERTAIN COMPRESSED NATURAL GAS (CNG) ENGINES (MHDD), DUE TO FAILURES IN MANNER THAT CAN LEAD TO SUBSEQUENT TURBOCHARGER OR ENGINE DAMAGE. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10054658","components":[{"id":"engine","name":"Engine","parent":null}],"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":[]}