{"nhtsa_id":50446,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1997-04-24","date":"1996-10-01","document_id":"BC5166961001","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"CONCERNS W/ THE SPEEDOMETER/ODOMETER INDICATION PLUS TRANS SHIFT CONCERNS DUE TO A FAILURE OF THE SPEEDOMETER DRIVE GEAR (E8TZ-2N598-A) LOCATED WITHIN THE TRANS MOUNTED PARKING BRAKE ASSY. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/50446","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"F SUPER DUTY","year_from":1996,"year_to":1997,"match":"exact","vehicle_ids":["1996_ford_f-super-duty","1997_ford_f-super-duty"]}],"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":[]}