{"nhtsa_id":607223,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-01-02","date":"1998-09-01","document_id":"98-4810","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"TECHNICAL ASSISTANCE FOR SPEEDOMETER ACCURACY CONCERNING 19999 F SUPER DUTY TRUCKS IS AVAILABLE THROUGH CLUSTER SERVICE CENTER PHONE LINE 800-259-9700-PROMPT #1.","document":null,"url":"https://open.wenmarpro.com/bulletins/607223","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"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":[]}