{"nhtsa_id":10013274,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2005-04-13","date":"2004-05-20","document_id":"05202004","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"STAIN COMING FROM THE CYLINDER HEAD EXPANSION PLUG. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10013274","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"PONTIAC","model":"GTO","year_from":2004,"year_to":2004,"match":"exact","vehicle_ids":["2004_pontiac_gto"]}],"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":[]}