{"nhtsa_id":54441,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1998-04-07","date":"1997-11-01","document_id":"971101985472","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:IGNITION:SWITCH","mfr_system":null,"summary":"GENERAL INFORMATION ON THE INSTRUMENTATION CONTROL UNIT (ICU) CONDUCTS A DATA BUS ROLL CALL OF PARTICULAR ELECTRONIC CONTROL UNITS ( ECUS) WHEN THE IGNITION KEYSWITCH IS TURNED ON. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/54441","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"ignition","name":"Ignition","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"FREIGHTLINER","model":"FREIGHTLINER","year_from":1997,"year_to":1997,"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":[]}