{"nhtsa_id":637586,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-12-03","date":"2002-04-01","document_id":"15840","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"SOME VEHICLES WITH THE 4.6L ENGINE AND ALL WHEEL DRIVE BUILT BETWEEN 02/25 AND 04/24, 2002 MAY EXHIBIT A SHUDDER ON THE 4-5 UPSHIFT AND / OR THE 5-4 DOWNSHIFT. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/637586","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"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":[]}