{"nhtsa_id":623801,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-10-30","date":"2001-08-01","document_id":"XT20501","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT","mfr_system":null,"summary":"INFORMATION REGARDING SOME VEHICLES MAY EXPERIENCE A WHINING NOISE FROM THE DIFFERENTIAL ON DECELERATION AT SPEEDS OF AROUND 112 KM/H70MPH. THIS BULLETIN PROVIDES A PROCEDURE TO RETUNE THE DIFFERENTIAL MONTING BRACKET BY ADDING MASS (WEIGHT) TO IT. *YH","document":null,"url":"https://open.wenmarpro.com/bulletins/623801","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"differential","name":"Differential","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"JAGUAR","model":"X-TYPE","year_from":2002,"year_to":2002,"match":"exact","vehicle_ids":["2002_jaguar_x-type"]}],"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":[]}