{"nhtsa_id":619288,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-05-22","date":"2001-04-01","document_id":"01T03S1","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"SPECIAL SERVICE INSTRUCTION - SUPPLEMENT #1 - REGARDING LABOR OPERATIONS AND CLAIMING INFORMATION FOR POTENTIAL INCORRECT PISTON RING INSTALLATION. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/619288","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"LINCOLN","model":"NAVIGATOR","year_from":2001,"year_to":2001,"match":"exact","vehicle_ids":["2001_lincoln_navigator"]}],"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":[]}