{"nhtsa_id":603899,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-03-11","date":"1998-04-08","document_id":"00398","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"SUBJECT ON SHIFT SHOCK OR BUMP ON 2-1 DOWNSHIFT. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/603899","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"MAZDA","model":"B-SERIES TRUCK","year_from":1995,"year_to":1995,"match":"base","vehicle_ids":["1995_mazda_b-series"]}],"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":[]}