{"nhtsa_id":616450,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-02-27","date":"2000-11-01","document_id":"00907","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:MANUAL TRANSMISSION","mfr_system":null,"summary":"ALLISON TRANSMISSION UPSHIFTING COMPLAINTS WITH T444E ENGINE CODES 12NNA, 12NNB, 12NNC, 12NND, 12NNE, 12NNH, 12NNJ, AND 12NNK ON CERTAIN MODELS BUILT BETWEEN AUGUST 1, 2000 AND AUGUST 7, 2000. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/616450","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"manual-transmission","name":"Manual transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"INTERNATIONAL","model":"1652","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"INTERNATIONAL HARVESTER","model":"3400","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"INTERNATIONAL HARVESTER","model":"3800","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"INTERNATIONAL HARVESTER","model":"4700","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":[]}