{"nhtsa_id":10055259,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2014-05-02","date":"2014-02-01","document_id":"SB-54-57","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT ADAPTIVE/MOBILITY","mfr_system":null,"summary":"WESTERN STAR: TROUBLESHOOTING INFORMATION REGARDING POWERNET ASSESSMENT WORKSHEET GUIDE FOR STARTING ISSUES, ALTERNATOR, PATH, BATTERY AND CHARGING OF VEHICLES WITH SEPARATE CABLE VOLTAGE DROP CHECKS. MODEL CONSTELLATION, 4800, 5900, HERITAGE, 4900, 6900, 4700. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10055259","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"labels-manuals","name":"Labels and manuals","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"WESTERN STAR","model":"4700","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_western-star_4700"]},{"make":"WESTERN STAR","model":"4900","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_western-star_4900"]},{"make":"WESTERN STAR","model":"6900","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_western-star_6900"]},{"make":"WESTERN STAR","model":"CONSTELLATION","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"WESTERN STAR","model":"HERITAGE","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":[]}