{"nhtsa_id":609985,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2000-04-12","date":"1999-12-31","document_id":"021199A","mfr_campaign":null,"replaces":"021199","component":"SUSPENSION","mfr_system":null,"summary":"THIS BULLETIN INVOLVES INSTALLING A FRONT TRACK BAR DAMPER AND BOTH FRONT UPPER CONTROL ARMS TO REDUCE FRONT DRIVELINE NOISE, VIBRATION, OR HARSHNESS (NVH). *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/609985","components":[{"id":"suspension","name":"Suspension","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE","year_from":1999,"year_to":1999,"match":"exact","vehicle_ids":["1999_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":[]}