{"nhtsa_id":615090,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2000-12-27","date":"1998-07-01","document_id":"836607","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE","mfr_system":null,"summary":"SOME VEHICLES BUILT PRIOR TO VIN BREAKPOINT W5127417 MAY EXPERIENCE EXHAUST MUFFLER INSULATOR RUMBLE NOISE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/615090","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null},{"id":"exhaust-pipe","name":"Exhaust manifold, pipes and muffler","parent":"exhaust-emissions"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"CORVETTE","year_from":1997,"year_to":1998,"match":"exact","vehicle_ids":["1997_chevrolet_corvette","1998_chevrolet_corvette"]}],"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":[]}