{"nhtsa_id":39024,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1995-03-01","date":"1994-12-01","document_id":"SB9403001","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM","mfr_system":null,"summary":"EXHAUST - BOOMING NOISE WHILE DRIVING. *TW","document":null,"url":"https://open.wenmarpro.com/bulletins/39024","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"ISUZU","model":"TROOPER","year_from":1992,"year_to":1994,"match":"exact","vehicle_ids":["1992_isuzu_trooper","1993_isuzu_trooper","1994_isuzu_trooper"]}],"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":[]}