{"nhtsa_id":54113,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1998-03-30","date":"1997-10-01","document_id":"97100120012","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"SHOP MANUAL CORRECTION ON CYLINDER HEAD BOLT TORQUE SPECIFICATION. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/54113","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"HYUNDAI","model":"SONATA","year_from":null,"year_to":null,"match":"exact","vehicle_ids":[]},{"make":"HYUNDAI","model":"SONATA","year_from":1986,"year_to":1988,"match":null,"vehicle_ids":[]},{"make":"HYUNDAI","model":"SONATA","year_from":1989,"year_to":1998,"match":"exact","vehicle_ids":["1989_hyundai_sonata","1990_hyundai_sonata","1991_hyundai_sonata","1992_hyundai_sonata","1993_hyundai_sonata","1994_hyundai_sonata","1995_hyundai_sonata","1996_hyundai_sonata","1997_hyundai_sonata","1998_hyundai_sonata"]}],"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":[]}