{"nhtsa_id":10014908,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2005-05-11","date":null,"document_id":"3367","mfr_campaign":null,"replaces":"3367A","component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"3-2 DOWNSHIFT BUZZ NOISE ON 2004 AND 2005 POLICE IMPALAS EQUIPPED WITH THE 3800 V6 ENGINE AND THE 4T65E TRANSMISSION. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10014908","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"IMPALA","year_from":2004,"year_to":2005,"match":"exact","vehicle_ids":["2004_chevrolet_impala","2005_chevrolet_impala"]}],"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":[]}