{"nhtsa_id":46847,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1996-04-25","date":"1995-12-01","document_id":"27WT95","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"RETARDER FLOW VALVE SPRING REDUCES THE CHANCE OF THE RETARDER STICKING IN THE 'ON' POSITION. *SD","document":null,"url":"https://open.wenmarpro.com/bulletins/46847","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"ALLISON DIV","model":"ALLISON DIV","year_from":null,"year_to":null,"match":null,"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":[]}