{"nhtsa_id":628070,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-03-05","date":"2001-10-31","document_id":"311001","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM","mfr_system":null,"summary":"SOME VEHICLES MAY EXHIBIT AN EXHAUST NOISE, RATTLE NOISE AT 550 RPM. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/628070","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"ASTRO","year_from":1996,"year_to":2001,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"BLAZER","year_from":1996,"year_to":2001,"match":"exact","vehicle_ids":["1996_chevrolet_blazer","1997_chevrolet_blazer","1998_chevrolet_blazer","1999_chevrolet_blazer","2000_chevrolet_blazer","2001_chevrolet_blazer"]},{"make":"CHEVROLET","model":"ENVOY","year_from":1996,"year_to":1996,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"EXPRESS","year_from":1996,"year_to":1996,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"EXPRESS","year_from":1997,"year_to":2001,"match":"exact","vehicle_ids":["1997_chevrolet_express","1998_chevrolet_express","1999_chevrolet_express","2000_chevrolet_express","2001_chevrolet_express"]},{"make":"GMC","model":"ENVOY","year_from":1997,"year_to":2001,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"JIMMY","year_from":1996,"year_to":2001,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"SAFARI","year_from":1996,"year_to":2001,"match":"exact","vehicle_ids":["1996_gmc_safari","1997_gmc_safari","1998_gmc_safari","1999_gmc_safari","2000_gmc_safari","2001_gmc_safari"]},{"make":"GMC","model":"SAVANA","year_from":1996,"year_to":2001,"match":"exact","vehicle_ids":["1996_gmc_savana","1997_gmc_savana","1998_gmc_savana","1999_gmc_savana","2000_gmc_savana","2001_gmc_savana"]},{"make":"OLDSMOBILE","model":"BRAVADA","year_from":1996,"year_to":2001,"match":"exact","vehicle_ids":["1996_oldsmobile_bravada","1997_oldsmobile_bravada","1998_oldsmobile_bravada","1999_oldsmobile_bravada","2000_oldsmobile_bravada","2001_oldsmobile_bravada"]}],"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":[]}