{"nhtsa_id":633734,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-09-24","date":"2002-05-01","document_id":"009","mfr_campaign":null,"replaces":null,"component":"SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM:DRUM","mfr_system":null,"summary":"A CHANGE IN THE REAR DRUM BRAKES TO REDUCE OPERATIONAL NOISE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/633734","components":[{"id":"brakes","name":"Brakes","parent":null},{"id":"brake-drum-shoe","name":"Brake drums and shoes","parent":"brakes"}],"codes":[],"topics":[],"vehicles":[{"make":"KIA","model":"OPTIMA","year_from":null,"year_to":null,"match":"exact","vehicle_ids":[]}],"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":[]}