{"nhtsa_id":613584,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2000-07-25","date":"2000-05-01","document_id":"00010","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"SOME CUSTOMERS MAY EXPERIENCE A FAILURE OF THE CYLINDER HEAD GASKET LEADING TO EXTERNAL COOLANT LEAKS FROM THE CYLINDER HEAD GASKET TO ENGINE BLOCK JOINT. **MR","document":null,"url":"https://open.wenmarpro.com/bulletins/613584","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"CAVALIER","year_from":1996,"year_to":1996,"match":"exact","vehicle_ids":["1996_chevrolet_cavalier"]},{"make":"CHEVROLET","model":"S10","year_from":1996,"year_to":1996,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"SONOMA","year_from":1996,"year_to":1996,"match":"exact","vehicle_ids":["1996_gmc_sonoma"]},{"make":"PONTIAC","model":"SUNFIRE","year_from":1996,"year_to":1996,"match":"exact","vehicle_ids":["1996_pontiac_sunfire"]}],"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":[]}