{"nhtsa_id":10037725,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2011-06-06","date":"2011-06-01","document_id":"SB-263-046","mfr_campaign":null,"replaces":"FSB-263-046-4","component":"UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","mfr_system":null,"summary":"MACK: FAN RINGS ARE CRACKING DURING EXTREME SERVICE. *RM UPDATED 9/7/11. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10037725","components":[{"id":"engine","name":"Engine","parent":null},{"id":"cooling-fan","name":"Cooling fan","parent":"engine"},{"id":"cooling-system","name":"Cooling system","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"GRANITE (GU)","year_from":2012,"year_to":2012,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"GU","year_from":2006,"year_to":2011,"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":[]}