{"nhtsa_id":39626,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1995-11-01","date":"1993-08-01","document_id":"GRP4/9310","mfr_campaign":null,"replaces":null,"component":"SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS","mfr_system":null,"summary":"BRAKE VIBRATION DAMPER APPLICATION - NEW DAMPING PLATE WITH STEEL CLIP. *TW","document":null,"url":"https://open.wenmarpro.com/bulletins/39626","components":[{"id":"brakes","name":"Brakes","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"PORSCHE","model":"911","year_from":1989,"year_to":1993,"match":"exact","vehicle_ids":["1989_porsche_911","1990_porsche_911","1991_porsche_911","1992_porsche_911","1993_porsche_911"]},{"make":"PORSCHE","model":"928","year_from":1988,"year_to":1988,"match":null,"vehicle_ids":[]},{"make":"PORSCHE","model":"928","year_from":1989,"year_to":1993,"match":"exact","vehicle_ids":["1989_porsche_928","1990_porsche_928","1991_porsche_928","1992_porsche_928","1993_porsche_928"]},{"make":"PORSCHE","model":"944","year_from":1987,"year_to":1991,"match":"exact","vehicle_ids":["1987_porsche_944","1988_porsche_944","1989_porsche_944","1990_porsche_944","1991_porsche_944"]},{"make":"PORSCHE","model":"944","year_from":1992,"year_to":1993,"match":null,"vehicle_ids":[]},{"make":"PORSCHE","model":"968","year_from":1992,"year_to":1993,"match":"exact","vehicle_ids":["1992_porsche_968","1993_porsche_968"]}],"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":[]}