{"nhtsa_id":602437,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1998-11-04","date":"1998-08-01","document_id":"9801L004","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","mfr_system":null,"summary":"WORKSHOP MANUAL REVISIONS ON COOLING FAN ASSEMBLY TORQUE SPECIFICATIONS. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/602437","components":[{"id":"engine","name":"Engine","parent":null},{"id":"cooling-fan","name":"Cooling fan","parent":"engine"},{"id":"cooling-system","name":"Cooling system","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"ISUZU","model":"TROOPER","year_from":1998,"year_to":1998,"match":"exact","vehicle_ids":["1998_isuzu_trooper"]}],"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":[]}