{"nhtsa_id":10026786,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2008-12-16","date":"2008-05-01","document_id":"2008FA-4","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"ALLISON TRANSMISSION SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. HIGH VOLTAGE INTERLOCK LOOP (HVIL) CIRCUIT CARDS FOR EP 40/50 SYSTEM, INSTALLED IN DUAL POWER INVERTER MODULES (DPIM) BUILT BETWEEN 6/14/05 & 6/20/06 WILL BE REPLACED. CSC LETTER WAS RECEIVED. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10026786","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"ALLISON","model":"TRANSMISSION","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"ALLISON DIV","model":"ALLISON DIV","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":[]}