{"nhtsa_id":620239,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-07-23","date":"2001-05-01","document_id":"14950","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT","mfr_system":null,"summary":"SOME ALL-WHEEL DRIVE VEHICLES MAY EXHIBIT A WHINE NOISE FROM THE FRONT DRIVELINE AT SPEEDS BETWEEN 40 AND 80 MILES PER HOUR. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/620239","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"differential","name":"Differential","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"MERCURY","model":"MOUNTAINEER","year_from":2002,"year_to":2002,"match":"exact","vehicle_ids":["2002_mercury_mountaineer"]}],"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":[]}