{"nhtsa_id":612732,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2000-06-12","date":"2000-01-01","document_id":"13737","mfr_campaign":null,"replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"ALL VEHICLES MAY EXHIBIT AN INOPERATIVE OR INACCURATE SPEEDOMETER, 4X4 LIGHT INOPERATIVE AND/OR DTC P1635 AFTER A PCM HAS BEEN REPLACED. *MJS","document":null,"url":"https://open.wenmarpro.com/bulletins/612732","components":[],"codes":["P1635"],"topics":[],"vehicles":[{"make":"FORD","model":"EXPEDITION","year_from":1999,"year_to":2000,"match":"exact","vehicle_ids":["1999_ford_expedition","2000_ford_expedition"]},{"make":"FORD","model":"F-150","year_from":1999,"year_to":2000,"match":"exact","vehicle_ids":["1999_ford_f-150","2000_ford_f-150"]},{"make":"FORD","model":"F-250","year_from":1999,"year_to":2000,"match":"exact","vehicle_ids":["1999_ford_f-250","2000_ford_f-250"]},{"make":"FORD","model":"MUSTANG","year_from":1999,"year_to":2000,"match":"exact","vehicle_ids":["1999_ford_mustang","2000_ford_mustang"]},{"make":"FORD","model":"NAVIGATOR","year_from":1999,"year_to":2000,"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":[]}