{"nhtsa_id":637794,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-12-06","date":"2002-05-01","document_id":"15905","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.","mfr_system":null,"summary":"SUBJECT REGARDING PIONEER TREMOR / ULTIMATE 450 WATT AUDIO SYSTEM WHINE NOISE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/637794","components":[{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"EXPLORER SPORT","year_from":2002,"year_to":2002,"match":"base","vehicle_ids":["2002_ford_explorer"]},{"make":"FORD","model":"EXPLORER SPORT TRAC","year_from":2002,"year_to":2002,"match":"exact","vehicle_ids":["2002_ford_explorer-sport-trac"]},{"make":"FORD","model":"RANGER","year_from":2002,"year_to":2002,"match":"exact","vehicle_ids":["2002_ford_ranger"]}],"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":[]}