{"nhtsa_id":600490,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1998-05-18","date":"1997-12-31","document_id":"241797","mfr_campaign":null,"replaces":null,"component":"VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM","mfr_system":null,"summary":"A REVISED COWL PLENUM SCREEN HAS BEEN RELEASED WHICH CONTAINS A FINE MESH SCREEN TO MINIMIZE DEBRIS FROM ENTERING THE HEATER A/C HOUSING. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/600490","components":[{"id":"visibility","name":"Glass, wipers and mirrors","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE","year_from":1993,"year_to":1997,"match":"exact","vehicle_ids":["1993_jeep_grand-cherokee","1994_jeep_grand-cherokee","1995_jeep_grand-cherokee","1996_jeep_grand-cherokee","1997_jeep_grand-cherokee"]},{"make":"JEEP","model":"GRAND WAGONEER","year_from":1993,"year_to":1993,"match":"exact","vehicle_ids":["1993_jeep_grand-wagoneer"]},{"make":"JEEP","model":"GRAND WAGONEER","year_from":1994,"year_to":1997,"match":null,"vehicle_ids":[]}],"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":[]}