{"nhtsa_id":37957,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1995-02-09","date":"1994-12-01","document_id":"476006","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM","mfr_system":null,"summary":"POPPING/FLUTTERING/TICKING/SPARK KNOCK NOISE WHILE DRIVING UP MEDIUM GRADES OR ACCELERATING FROM A STOP. *TW","document":null,"url":"https://open.wenmarpro.com/bulletins/37957","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BUICK","model":"PARK AVENUE","year_from":1995,"year_to":1995,"match":"exact","vehicle_ids":["1995_buick_park-avenue"]},{"make":"BUICK","model":"RIVIERA","year_from":1995,"year_to":1995,"match":"exact","vehicle_ids":["1995_buick_riviera"]},{"make":"OLDSMOBILE","model":"88","year_from":1995,"year_to":1995,"match":null,"vehicle_ids":[]},{"make":"OLDSMOBILE","model":"98","year_from":1995,"year_to":1995,"match":null,"vehicle_ids":[]},{"make":"PONTIAC","model":"BONNEVILLE","year_from":1995,"year_to":1995,"match":"exact","vehicle_ids":["1995_pontiac_bonneville"]}],"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":[]}