{"nhtsa_id":637789,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-12-06","date":"2002-05-01","document_id":"15902","mfr_campaign":null,"replaces":null,"component":"STEERING:HYDRAULIC POWER ASSIST SYSTEM","mfr_system":null,"summary":"SOME VEHICLES MAY EXHIBIT LACK OF POWER STEERING ASSIST. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/637789","components":[{"id":"steering","name":"Steering","parent":null},{"id":"power-steering","name":"Power steering","parent":"steering"}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"EXCURSION","year_from":1999,"year_to":1999,"match":null,"vehicle_ids":[]},{"make":"FORD","model":"EXCURSION","year_from":2000,"year_to":2002,"match":"exact","vehicle_ids":["2000_ford_excursion","2001_ford_excursion","2002_ford_excursion"]},{"make":"FORD","model":"SUPER DUTY","year_from":1999,"year_to":2002,"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":[]}