{"nhtsa_id":615461,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-01-16","date":"1998-12-01","document_id":"12194","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"SOME VEHICLES EQUIPPED WITH 7.3L ENGINE AND 4R100 TRANSMISSION MAY EXHIBIT A SHIFT FLARE (INCREASE IN RPM DURING 2-3 / 3-4 SHIFTS). *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/615461","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"F SUPER DUTY","year_from":1999,"year_to":1999,"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":[]}