{"nhtsa_id":10058990,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-01-08","date":"2014-11-01","document_id":"FA-2014FA08","mfr_campaign":null,"replaces":"2014FA08 REV C","component":"POWER TRAIN:AUTOMATIC TRANSMISSION; ELECTRICAL SYSTEM:SOFTWARE","mfr_system":null,"summary":"ALLISON TRANSMISSION: TRANSMISSION CONTROL MODULE (TCM), IN SOME TRUCKS, WITH TORQUE CONVERTER LOCKUP, WILL HAVE PREMATURE C4 CLUTCH PACK WEAR AND WILL NEED TO HAVE NEW CALIBRATIONS INSTALLED TO PREVENT TORQUE CONVERTER LOCKUP IN THE 1ST RANGE. *PE UPDATED 1/15/16. *PE UPDATED 1/22/16. *PE UPDATED 2/1/16. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10058990","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"},{"id":"software","name":"Software","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"ALLISON","model":"TRANSMISSION","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":[]}