{"nhtsa_id":10011658,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2005-01-28","date":null,"document_id":"3218","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"CYLINDER HEAD CRACKS BETWEEN THE VALVE SEATS. THIS ALSO INCLUDES 92-01 C1 C2 C3 K1 K2 K3 G2 G3 P3 CHEVROLET 6.5 L56 L57 L65 GMC 6.5 L56 L57 L65 MODELS. *EH","document":null,"url":"https://open.wenmarpro.com/bulletins/10011658","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"UNKNOWN","model":"UNKNOWN","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"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":[]}