{"nhtsa_id":601254,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1998-07-14","date":"1998-04-21","document_id":"9821","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT","mfr_system":null,"summary":"SPECIFICATIONS AND SERVICE PROCEDURES USED IN THE CURRENT SERVICE MANUALS ARE BEING REVISED TO PROVIDE IMPROVED DIFFERENTIAL BEARING LIFE. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/601254","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"differential","name":"Differential","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE","year_from":1996,"year_to":1998,"match":"exact","vehicle_ids":["1996_jeep_grand-cherokee","1997_jeep_grand-cherokee","1998_jeep_grand-cherokee"]}],"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":[]}